Move the multi-event import's confirm button into the app-bar actions so
it's reachable without scrolling past a long calendar list, and put the
count in the title ('Importing 5 events') instead of a separate 'N events
in this file' line. Hoists the selected target calendar to the screen so
the top-bar action can read it.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>