Fix for Advanced Climbing bug #2560

[KABoissonneault]

Issue at #2560

Fixed "overrideSkillCheck" not being turned off after being done Climbing.
overrideSkillCheck is used in the transition from wall to the floor above it, and should only be true during that automatic movement.

Moved "ClearStateOnRestore" to always run on restore, not just when climbing with Advanced.

The second fix is not strictly required, but seems cleaner. No risk of regression, since non-advanced climbing should have no expectation of state if saving/reloading during climbing (it's supposed to drop the moment you let the key go).

[KABoissonneault]

Things not in the PR but I'm considering:

• the debug hud (I think a setup like this could be useful for future debugging, given that a lot of things we're working with are not from the original implementors)
• a cheat code for flawless climbing (maybe some people will be disappointed that their low climb character falls off much more often now)

[Interkarma]

All good if you want to include the debug HUD or a flawless climbing cheat, either in this PR or separate PRs.

Good point on low climb characters being disappointed with the fix.

[numidium]

I tested this on my end. My character slips when doing long climbs as expected but if I stop mid-climb, move sideways, and continue moving in any direction then I can scale a building like a spider indefinitely without slipping. Not sure if this is intentional.