gdextension: Sync with upstream commit 01545c995b0612c68f9dfce8f6cc67576c298381 (4.4-rc2)

Author: dsnopek

gdextension/extension_api.json

@@ -3,9 +3,9 @@
 		"version_major": 4,
 		"version_minor": 4,
 		"version_patch": 0,
-		"version_status": "rc1",
+		"version_status": "rc2",
 		"version_build": "official",
-		"version_full_name": "Godot Engine v4.4.rc1.official"
+		"version_full_name": "Godot Engine v4.4.rc2.official"
 	},
 	"builtin_class_sizes": [
 		{
@@ -3815,6 +3815,10 @@
 					"name": "METHOD_FLAG_OBJECT_CORE",
 					"value": 64
 				},
+				{
+					"name": "METHOD_FLAG_VIRTUAL_REQUIRED",
+					"value": 128
+				},
 				{
 					"name": "METHOD_FLAGS_DEFAULT",
 					"value": 1