Fix move/rename follow-up after handled file events

[imkgh]

Fix follow-up behavior when file actions are custom handled, and make source-specific post-action updates more consistent.

• completes move actions after BEFORE_FILE_MOVE is handled
• passes refresh callbacks through rename handlers
• focuses the moved destination in buffers and git_status sources

Tested manually with:

• rename
• rename_basename
• cut_to_clipboard + paste_from_clipboard
• move in filesystem, buffers, and git_status

[pynappo]

ty!