While no library is open (the launch list, or the window of a library that
failed to open), a drop went into the in-memory session that the library
chosen then replaced, so the photos were gone from view. They now join the
command line's files (`pendingImport`) and are imported into the library
that opens (or the temporary session), with a toast saying so. Found by
CodeRabbit on #2689. Test
photos_dropped_on_the_launch_list_go_into_the_library_chosen fails with
the hold disabled.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>