Feature/v2/more landing zones (#4575)

# 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)

### 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.

---------

Co-authored-by: Copilot <[email protected]>

frontend/public/locales/en-GB/translation.json

@@ -3153,6 +3153,9 @@
     "addFiles": "Add Files",
     "dragFilesInOrClick": "Drag files in or click \"Add Files\" to browse"
   },
+  "fileEditor": {
+    "addFiles": "Add Files"
+  },
   "fileManager": {
     "title": "Upload PDF Files",
     "subtitle": "Add files to your storage for easy access across tools",
@@ -3188,7 +3191,6 @@
     "googleDriveShort": "Drive",
     "myFiles": "My Files",
     "noRecentFiles": "No recent files found",
-    "dropFilesHint": "Drop files here to upload",
     "googleDriveNotAvailable": "Google Drive integration not available",
     "openFiles": "Open Files",
     "openFile": "Open File",