Fix #33899: Maya keymap/custom keymap selection issues

Switch selection from Release to Click, so releasing mouse button
after transform confirmation wouldn't trigger selection operator.

However, needed to disable old Click behavior which used to deselect
everything if click happened outside of any object. It wad bad way
to do such a behavior and shall be re-think and solved in a better
way.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@53956 954f8c5b-7b00-dc11-b283-0030488c597c