Priorize Embedded PCKs on loading
Priorize Embedded PCKs on loading

If existing, embedded PCKs are loaded before the pcks the engine might
find next to it.

Fixes #37568

(cherry picked from commit fba98950c710f72c0eef5354f28977c34724c240)

ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot