Fix compilation on gcc13

[groud]

Fixes compilation on gcc13. Wihtout it, it would not compile with this scons command: scons platform=linuxbsd verbose=yes target=editor dev_build=yes -j4 warnings=extra werror=yes

The error was:

editor/editor_inspector.cpp: In member function 'void EditorInspector::_edit_set(const String&, const Variant&, bool, const String&)':
editor/editor_inspector.cpp:3694:41: error: possibly dangling reference to a temporary [-Werror=dangling-reference]
 3694 |                         const Callable &callback = EditorNode::get_singleton()->get_editor_data().get_undo_redo_inspector_hook_callback()[i];
      |                                         ^~~~~~~~
editor/editor_inspector.cpp:3694:140: note: the temporary was destroyed at the end of the full expression 'EditorData::get_undo_redo_inspector_hook_callback()().Vector<Callable>::operator[](i)'
 3694 |                         const Callable &callback = EditorNode::get_singleton()->get_editor_data().get_undo_redo_inspector_hook_callback()[i];
      |   

This PR seems to have fixed it on my computer.

[adamscott]

Looks good to me!

[akien-mga]

Thanks!

[akien-mga]

Cherry-picked for 4.0.5.