Fix GCC 14 -Wtemplate-id-cdtor warning

As was fixed with godotengine/godot#91208

(cherry picked from commit 7b31f39beaca1a98307402f53d69f3657f3bed86)

include/godot_cpp/templates/safe_refcount.hpp

@@ -132,7 +132,7 @@ public:
 		}
 	}
 
-	_ALWAYS_INLINE_ explicit SafeNumeric<T>(T p_value = static_cast<T>(0)) {
+	_ALWAYS_INLINE_ explicit SafeNumeric(T p_value = static_cast<T>(0)) {
 		set(p_value);
 	}
 };