Fix `ClassDB` not checking for `API_EDITOR_EXTENSION`

core/object/class_db.cpp

@@ -505,7 +505,7 @@ Object *ClassDB::_instantiate_internal(const StringName &p_class, bool p_require
 		ERR_FAIL_NULL_V_MSG(ti->creation_func, nullptr, "Class '" + String(p_class) + "' or its base class cannot be instantiated.");
 	}
 #ifdef TOOLS_ENABLED
-	if (ti->api == API_EDITOR && !Engine::get_singleton()->is_editor_hint()) {
+	if ((ti->api == API_EDITOR || ti->api == API_EDITOR_EXTENSION) && !Engine::get_singleton()->is_editor_hint()) {
 		ERR_PRINT("Class '" + String(p_class) + "' can only be instantiated by editor.");
 		return nullptr;
 	}
@@ -664,7 +664,7 @@ bool ClassDB::can_instantiate(const StringName &p_class) {
 		return scr.is_valid() && scr->is_valid() && !scr->is_abstract();
 	}
 #ifdef TOOLS_ENABLED
-	if (ti->api == API_EDITOR && !Engine::get_singleton()->is_editor_hint()) {
+	if ((ti->api == API_EDITOR || ti->api == API_EDITOR_EXTENSION) && !Engine::get_singleton()->is_editor_hint()) {
 		return false;
 	}
 #endif
@@ -684,7 +684,7 @@ bool ClassDB::is_virtual(const StringName &p_class) {
 		return scr.is_valid() && scr->is_valid() && scr->is_abstract();
 	}
 #ifdef TOOLS_ENABLED
-	if (ti->api == API_EDITOR && !Engine::get_singleton()->is_editor_hint()) {
+	if ((ti->api == API_EDITOR || ti->api == API_EDITOR_EXTENSION) && !Engine::get_singleton()->is_editor_hint()) {
 		return false;
 	}
 #endif