1 - Make a prompt in Google AI Studio 2 - Delete it 3 - Go to Drive > Trash and delete the trash file ("forever") something that will happen on its own after 30 days 4 - Go to a support page for recovering lost files and try to recover it (Google themselves state this needs to be done within 25 days) 5 - Conclude Google are being naughty?
Everything is working as intended. You made content, deleted it, deleted it from trash, then used the final failsafe within the described 25 day window to recover that content.
If you broaden the process from "immediately recover[ing]" the file to doing so after 25 days and it still works then I'd say something unwanted is happening.
Also posting this to a "Fuck AI" community with the opener "I am asking everyone who uses Google AI Studio to help with something critical" is unlikely to get you many volunteers. They don't use AI at all in there.