This commit fixes an issue where dragging workspaces to change their position doesn't work on Linux platforms.
The main changes include:
1. Added Linux-specific drag and drop handling with a transparent drag image
2. Enhanced dragover event handling for better visual feedback on Linux
3. Improved CSS styles for drag and drop elements on Linux
4. Added clearer comments to explain the reorder mode behavior
The issue was that the drag and drop functionality wasn't working properly on Linux due to platform-specific behavior differences. This fix ensures that workspace reordering works consistently across all platforms.
