deps(embedPDF): Bump codebase to embedPDF v2.3.0 and adjust codebase for new features (#5567)

# Description of Changes

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Please provide a summary of the changes, including:

- What was changed
- Why the change was made
- Any challenges encountered

Closes #(issue_number)
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---

## 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.

---------

Signed-off-by: Balázs Szücs <[email protected]>
Co-authored-by: Anthony Stirling <[email protected]>

frontend/src/core/components/viewer/CustomSearchLayer.tsx

@@ -1,11 +1,12 @@
 import { useState, useEffect, useMemo } from 'react';
+import { useDocumentState } from '@embedpdf/core/react';
 import { useSearch } from '@embedpdf/plugin-search/react';
-import { useViewer } from '@app/contexts/ViewerContext';
 import { SEARCH_CONSTANTS } from '@app/components/viewer/constants/search';
 
 interface SearchLayerProps {
+  documentId?: string;
   pageIndex: number;
-  scale: number;
+  scale?: number;
   highlightColor?: string;
   activeHighlightColor?: string;
   opacity?: number;
@@ -25,18 +26,22 @@ interface SearchResultState {
 }
 
 export function CustomSearchLayer({
+  documentId = '',
   pageIndex,
-  scale,
+  scale: scaleProp,
   highlightColor = SEARCH_CONSTANTS.HIGHLIGHT_COLORS.BACKGROUND,
   activeHighlightColor = SEARCH_CONSTANTS.HIGHLIGHT_COLORS.ACTIVE_BACKGROUND,
   opacity = SEARCH_CONSTANTS.HIGHLIGHT_COLORS.OPACITY,
   padding = SEARCH_CONSTANTS.UI.HIGHLIGHT_PADDING,
   borderRadius = 4
 }: SearchLayerProps) {
-  const { provides: searchProvides } = useSearch();
-  const { scrollActions } = useViewer();
+  const { provides: searchProvides } = useSearch(documentId);
+  const documentState = useDocumentState(documentId);
   const [searchResultState, setSearchResultState] = useState<SearchResultState | null>(null);
 
+  // Use document scale from EmbedPDF state, fallback to prop, then to 1
+  const scale = documentState?.scale ?? scaleProp ?? 1;
+
   // Subscribe to search result state changes
   useEffect(() => {
     if (!searchProvides) {
@@ -45,16 +50,8 @@ export function CustomSearchLayer({
 
     const unsubscribe = searchProvides.onSearchResultStateChange?.((state: SearchResultState) => {
       if (!state) return;
-
-      // Auto-scroll to active search result
-      if (state.results && state.activeResultIndex !== undefined && state.activeResultIndex >= 0) {
-        const activeResult = state.results[state.activeResultIndex];
-        if (activeResult) {
-          const pageNumber = activeResult.pageIndex + 1; // Convert to 1-based page number
-          scrollActions.scrollToPage(pageNumber);
-        }
-      }
-
+      // Only update state - do NOT auto-scroll here
+      // Scrolling should only happen when user explicitly navigates via next/previous
       setSearchResultState(state);
     });