Diff Viewer Bug Fixes

Improvements

• Switching between models in the middle of a session is now much faster
• We've refreshed our accent color scale
• Add Android Studio to the Open In menu

Fixes

• Fixed files not refreshing in diffs
• Fixed deleted files not rendering in diffs
• Navigate away from a workspace if its repository is deleted
• Fix bottom padding on single file diffs
• Focus the chat tab when sending a message
• Disable arrow key shortcuts when focused on the composer