feat: Enhance MorphDeleteButton and PackEditDrawer components with compact mode and styling updates

Commit notes

- Added a `compact` prop to the MorphDeleteButton component for a more streamlined appearance. - Updated button styles in PackEditDrawer and SampleEditDrawer to use brand colors for better visibility. - Integrated compact mode in LibrarySampleGrid and PackOrganizer components to utilize the new MorphDeleteButton feature. - Improved loading spinner styles for consistency across components.