M4: RIDDLE: Soft lock when clicking "Talk to Monk" while looking at grate in Sikkim

[afreickmann]

What happens:
When Ripley looks at the grate in Sikkim, you can immediately click on "Talk to Monk" while the look animation or comment is still playing. This causes both actions to trigger at the same time, resulting in a soft lock — the game gets stuck and doesn't continue.

Expected behavior (original game):
In the original version, this was prevented by automatically showing the pocket watch, which blocked any player interaction until the current action (looking at the grate) was finished.

Suggested fix:
Temporarily disable input (or show the pocket watch) during the grate look interaction to match original behavior and prevent action overlap.

[Strangerke <arnaud.boutonne@…>]

In d9dd4852:

M4: RIDDLE: Fix for bug #16081 in several rooms of group 7 (control not desactivated after click on look at grate)