Ensure the storage is setup when using the size_sync outside of the class

[aatanasov-cloudinary]

The size_sync method of the storage component is used by other components. For example, when preparing a report, the report might use the size_sync method, which uses other components. If the storage isn't setup, this leads to a PHP fatal error.

Approach

• Init the setup if $this->media is missing

QA notes

Two options:

• Use $this->plugin->get_component( 'storage' )->size_sync( $media_id ); outside of the Storage component.
• Find an attachment without local_size or remote_size, and generate a report. Previously, it caused errors.