SCI32: Fix QFG4 Great Hall argument door

Fixes a large number of script bugs surrounding the door to
the argument between Katrina and Ad Avis in the great hall.
This fixes floppy-only bugs, CD regressions, and message
responses which were broken in all versions.

As part of this, the audio for two messages is now available
in the CD version for the first time.

Bug #10799