Merge pull request #39015 from ThakeeNathees/dict-key-autocomplete-regression-fix

regression: dictionary key no autocomplete fix

modules/gdscript/gdscript_editor.cpp

@@ -2082,7 +2082,11 @@ static void _find_identifiers_in_base(const GDScriptCompletionContext &p_context
 
 				if (!p_only_functions) {
 					List<PropertyInfo> members;
-					tmp.get_property_list(&members);
+					if (p_base.value.get_type() != Variant::NIL) {
+						p_base.value.get_property_list(&members);
+					} else {
+						tmp.get_property_list(&members);
+					}
 
 					for (List<PropertyInfo>::Element *E = members.front(); E; E = E->next()) {
 						if (String(E->get().name).find("/") == -1) {