Keep editor at normal priority on windows.
Keep editor at normal priority on windows.

The multithreaded importer often causes system-wide hangs when importing more than 20 files at a time.
Running the editor at normal priority allows other applications on the system to be responsive during long imports.

(cherry picked from commit ee02a7f785b672304346028bc500949050432fa5)

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