FBX Import: Normalize rotation quaternions

fix #47174

(cherry picked from commit 72d3bfc88c562395302168b2041dc3bd83706120)

modules/fbx/editor_scene_importer_fbx.cpp

@@ -1177,7 +1177,7 @@ Spatial *EditorSceneImporterFBX::_generate_scene(
 								max_duration = animation_track_time;
 							}
 
-							rot_values.push_back(final_rotation);
+							rot_values.push_back(final_rotation.normalized());
 							rot_times.push_back(animation_track_time);
 						}