Revert "#26630 wrap command callbacks to ensure exceptions bubble up in Maya Because we use evalDeferred for stability on Linux, we've exposed a bug in Maya that causes any exceptions that are raised during the callback to get silently hidden and could potentially cause a crash. This works around the issue by wrapping the callback in a try/except clause and logging our own exception which raises the error and traceback info."

This reverts commit ac074f3d2dd5f03989bf3d32bf543a63fd98a046.