Allow `.res` and `.tres` extensions in the scene CLI positional argument
Allow `.res` and `.tres` extensions in the scene CLI positional argument

This closes #35709.

(cherry picked from commit 653334cc8d4f232034c6086bd7672bb9e04932b7)

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