Blender Git Loki

Fix T47009: Value typing issue in pie menu.

When we have an active button in modal state, completely bypass the whole 'pie' handling part of the menu.

Note that behavior is probably still not ideal here (e.g. would be nice to avoid enter/escape to quit
completely the pie menu in that case - but on the other hand Pies were not really designed to handle
that kind of modal stuff either, so think having minimal support for it is enough for now.