fix: deactivate active pseudo selectors on unregistration

[MatiPl01]

Follow-up to #9775.

When the pseudo styles are unregistered while a selector is active (e.g. a render removes the ':active' value, or the view's style loses its pseudo selectors mid-press), the gesture listeners are detached with the active state still applied: the held value stays in the updates registry and the pseudo lock keeps filtering render transitions for those properties, so the view is stuck at the pseudo value indefinitely.

PseudoStylesRegistry::remove now runs the deactivation transition (active mask back to the defaults) and drops the lock before detaching. Also guards getPropertySettings against properties whose settings never parsed (e.g. a discrete property without allowDiscrete), which the toggle path could previously hit as an uncaught std::out_of_range.

Verified on the iOS simulator: removing ':active' from the style while the finger is down animates the view back to its base value (previously it stayed at the pseudo value forever).