- Added support for standalone group invites in MessageBubble component.
- Improved bubble padding and width handling for group invites.
- Refactored MessageBubble to streamline background and border logic.
- Introduced AnimatedDownloadIndicator for a more engaging download experience.
- Created ThemeWallpapers data structure to manage chat wallpapers.
- Implemented WallpaperSelectorRow and WallpaperSelectorItem for theme customization.
- Updated ThemeScreen to allow wallpaper selection and preview.
- Added new drawable resources for download and search icons.
