Fix Tree's 'scroll_to_item()' not working correctly on some cases
Fix Tree's 'scroll_to_item()' not working correctly on some cases

(cherry picked from commit 144a4cc39f037b6deba6095a342ede59d1afa8cb)

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