M4: RIDDLE: Inventory visible + wrong music in credits from main menu

[afreickmann]

What happens:
If you load a save game, then return to the main menu and start the credits:
The inventory UI is still visible during the credits.
The music played is the in-game audio track from the ending, not the main menu theme like in the original game.

Expected behavior:
The inventory should be hidden during the credits.
If started from the main menu, the main menu music should play, not the ending track.

[Strangerke <arnaud.boutonne@…>]

In 323a695e:

M4: Riddle: Fix interface eventually showing during credits (#16070), small cleanup

[Strangerke]

the music seems to be properly set when coming from room 494 (main menu) or from another room. I fixed the interface showing. Could you check the current behavior and confirm it's now correct? Thanks in advance