Add

• Improved video editing experience:
  • Added a shadow area mask for a clearer view of the currently selected video clip.
  • Added a feature to display the duration of the currently selected clip.
• The ZLImagePreviewController interface supports disabling the pull-down return gesture.
• Change the permission of ZLPhotoPreviewSheet to private.

Fix

• Fixed a bug where the UI of the thumbnail interface might display an error when the permission is "limited".