Fix again 'auto override' system.

Got lost in big undo refactor.

Note that this is probably (maybe) not how we want to have it in the
end, things like EditMode undo should probably not trigger this check?

source/blender/blenkernel/intern/undo_system.c

@@ -39,6 +39,7 @@
 
 #include "BKE_context.h"
 #include "BKE_global.h"
+#include "BKE_library_override.h"
 #include "BKE_main.h"
 #include "BKE_undo_system.h"
 
@@ -392,6 +393,10 @@ bool BKE_undosys_step_push_with_type(UndoStack *ustack, bContext *C, const char
 	undosys_stack_validate(ustack, false);
 	bool is_not_empty = ustack->step_active != NULL;
 
+	/* Might not be final place for this to be called - probably only want to call it from some
+	 * undo handlers, not all of them? */
+	BKE_main_override_static_operations_create(CTX_data_main(C));
+
 	/* Remove all undos after (also when 'ustack->step_active == NULL'). */
 	while (ustack->steps.last != ustack->step_active) {
 		UndoStep *us_iter = ustack->steps.last;