PHP 8.2 dynamic property warning

[javiermarinros]

Under PHP 8.2 runtime this notice is emitted

Creation of dynamic property google\appengine\ext\remote_api\Request::$request_id is deprecated in \vendor\google\appengine-php-sdk\src\Ext\RemoteApi\remote_api_pb.php:80

Some more information about PHP 8.2 dynamic properties: https://php.watch/versions/8.2/dynamic-properties-deprecated

[javiermarinros]

Just adding extends \stdClass to class \google\net\ProtocolMessage solves the issue and its compatible with older PHP versions.

We need this fix in order to be able to use the SDK in the new PHP 8.2 runtime for AppEngine Standard

@jinglundong

[jinglundong]

Ludo, I think we need to reserve (or request additional) capacity for the PHP SDK repo. I'm a bit overloaded at this point.