Merge pull request #99403 from dsnopek/gdextension-fix-varargs-with-no-args

GDExtension: Fix method binds not saying if they are varargs

core/extension/gdextension.cpp

@@ -154,7 +154,7 @@ public:
 	}
 
 	virtual bool is_vararg() const override {
-		return false;
+		return vararg;
 	}
 
 #ifdef TOOLS_ENABLED