Raise coverage

[charlesBochet]

Adding a few tests and remove a few unused files to raise code coverage a bit

[greptile-apps]

PR Summary

This pull request focuses on improving code organization, correcting import paths, and enhancing test coverage.

• CalendarEventParticipantsResponseStatusField.tsx: Reordered imports and corrected import path for isRightDrawerAnimationCompletedState.
• ActivityEditorFields.tsx: Updated import path for isRightDrawerAnimationCompletedState.
• ActivityTargetInlineCellEditMode.tsx: Removed getActivityTargetObjectFieldName import and replaced with direct reference to record.objectMetadataItem.nameSingular.
• getActivityTargetObjectFieldName.ts: Deleted as its functionality was replaced.
• RightDrawer.tsx: Reordered imports and corrected import path for isRightDrawerAnimationCompletedState.
• isRightDrawerAnimationCompletedState.ts: Renamed and updated to use createState from twenty-ui.
• isValidUuid.test.ts: Added new test file to validate isValidUuid utility function.

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