Blender Git Loki

Fix T83020: Transform: AutoConstraint being confirmed without releasing the MMB

The transform modifiers are confirmed by releasing any button.

Thus, the operation can be falsely confirmed if the button that launched
the operation is released after the modifier has been activated.

Previously the events that confirmed the modifiers were hardcoded.

An option to fix this would be to add custom confirmation keyitens for
specific modifiers. But this can be a bit confusing and would make the
modal keymap even bigger.

So the solution here is to skip the button that launched the operation
when confirming the modifier.