scrollbar fixes (#5529)

# Description of Changes

- Add scrolling bar to settings menus
- Fix scrolling bar in My files

-fix depreciated pdf editor code


## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### Translations (if applicable)

- [ ] I ran
[`scripts/counter_translation.py`](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/docs/counter_translation.md)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.

app/core/src/main/java/stirling/software/SPDF/service/PdfJsonConversionService.java

@@ -3424,7 +3424,7 @@ public class PdfJsonConversionService {
                         }
                         break;
                     case "Tj":
-                        if (i == 0 || !(tokens.get(i - 1) instanceof COSString cosString)) {
+                        if (i == 0 || !(tokens.get(i - 1) instanceof COSString)) {
                             log.debug(
                                     "Encountered Tj without preceding string operand; aborting rewrite");
                             return false;
@@ -3435,7 +3435,8 @@ public class PdfJsonConversionService {
                                 i,
                                 cursor.remaining());
                         if (!rewriteShowText(
-                                cosString,
+                                tokens,
+                                i - 1,
                                 currentFont,
                                 currentFontModel,
                                 currentFontName,
@@ -3496,7 +3497,8 @@ public class PdfJsonConversionService {
     }
 
     private boolean rewriteShowText(
-            COSString cosString,
+            List<Object> tokens,
+            int tokenIndex,
             PDFont font,
             PdfJsonFont fontModel,
             String expectedFontName,
@@ -3509,6 +3511,7 @@ public class PdfJsonConversionService {
                     expectedFontName);
             return false;
         }
+        COSString cosString = (COSString) tokens.get(tokenIndex);
         int glyphCount = countGlyphs(cosString, font);
         log.trace(
                 "rewriteShowText consuming {} glyphs at cursor index {} for font {}",
@@ -3525,7 +3528,7 @@ public class PdfJsonConversionService {
             return false;
         }
         if (removeOnly) {
-            cosString.setValue(new byte[0]);
+            tokens.set(tokenIndex, new COSString(new byte[0]));
             return true;
         }
         MergedText replacement = mergeText(consumed);
@@ -3540,7 +3543,7 @@ public class PdfJsonConversionService {
                         replacement.text());
                 return false;
             }
-            cosString.setValue(encoded);
+            tokens.set(tokenIndex, new COSString(encoded));
             return true;
         } catch (IOException | IllegalArgumentException | UnsupportedOperationException ex) {
             log.debug(

build.gradle

@@ -67,7 +67,7 @@ springBoot {
 
 allprojects {
     group = 'stirling.software'
-    version = '2.3.0'
+    version = '2.3.1'
 
     configurations.configureEach {
         exclude group: 'commons-logging', module: 'commons-logging'

frontend/src/core/components/fileManager/DesktopLayout.tsx

@@ -62,11 +62,15 @@ const DesktopLayout: React.FC = () => {
             </>
           )}
 
-          <div style={{ flex: 1, minHeight: 0 }}>
+          <div style={{ flex: 1, minHeight: 0, overflow: 'hidden' }}>
             <FileListArea
-              scrollAreaHeight={`calc(${modalHeight} )`}
+              scrollAreaHeight={activeSource === 'recent' && recentFiles.length > 0
+                ? `calc(${modalHeight} - 7rem)`
+                : '100%'}
               scrollAreaStyle={{
-                height: activeSource === 'recent' && recentFiles.length > 0 ? modalHeight : '100%',
+                height: activeSource === 'recent' && recentFiles.length > 0
+                  ? `calc(${modalHeight} - 7rem)`
+                  : '100%',
                 backgroundColor: 'transparent',
                 border: 'none',
                 borderRadius: 0

frontend/src/core/components/shared/AppConfigModal.css

@@ -57,12 +57,35 @@
   overflow-y: auto;
   padding: 1rem;
   padding-bottom: 2rem;
-  scrollbar-width: none;
+  scrollbar-width: thin;
-  -ms-overflow-style: none;
+  scrollbar-color: transparent transparent;
+  transition: scrollbar-color 0.2s ease;
+}
+
+.modal-nav-scroll:hover {
+  scrollbar-color: rgba(128, 128, 128, 0.5) transparent;
 }
 
 .modal-nav-scroll::-webkit-scrollbar {
-  display: none;
+  width: 8px;
+}
+
+.modal-nav-scroll::-webkit-scrollbar-track {
+  background: transparent;
+}
+
+.modal-nav-scroll::-webkit-scrollbar-thumb {
+  background-color: transparent;
+  border-radius: 4px;
+  transition: background-color 0.2s ease;
+}
+
+.modal-nav-scroll:hover::-webkit-scrollbar-thumb {
+  background-color: rgba(128, 128, 128, 0.5);
+}
+
+.modal-nav-scroll::-webkit-scrollbar-thumb:hover {
+  background-color: rgba(128, 128, 128, 0.7);
 }
 
 .modal-nav-section {
@@ -94,12 +117,35 @@
 .modal-content-scroll {
   flex: 1;
   overflow-y: auto;
-  scrollbar-width: none;
+  scrollbar-width: thin;
-  -ms-overflow-style: none;
+  scrollbar-color: transparent transparent;
+  transition: scrollbar-color 0.2s ease;
+}
+
+.modal-content-scroll:hover {
+  scrollbar-color: rgba(128, 128, 128, 0.5) transparent;
 }
 
 .modal-content-scroll::-webkit-scrollbar {
-  display: none;
+  width: 8px;
+}
+
+.modal-content-scroll::-webkit-scrollbar-track {
+  background: transparent;
+}
+
+.modal-content-scroll::-webkit-scrollbar-thumb {
+  background-color: transparent;
+  border-radius: 4px;
+  transition: background-color 0.2s ease;
+}
+
+.modal-content-scroll:hover::-webkit-scrollbar-thumb {
+  background-color: rgba(128, 128, 128, 0.5);
+}
+
+.modal-content-scroll::-webkit-scrollbar-thumb:hover {
+  background-color: rgba(128, 128, 128, 0.7);
 }
 
 .modal-header {