#3387094: add $context to FlySystemBridge as required for stream wrappers in PHP. See https://www.php.net/manual/en/class.streamwrapper.php#streamwrapper.props.context. Without this, PHP warnings are raised as the property is created dynamically. It would be ideal to add this to the parent class \Twistor\FlysystemStreamWrapper, but the PR to add there is being ignored, and that project has no commits since 2019.
Closes #3387094