fix(trashbin): keep cache and db consistent

[hweihwang]

Summary

• insert files_trash row before payload move and remove it (and payload/cache) on move failure
• update trash cache for uncached sources using size delta to avoid full folder scan
• delete files_trash row after payload delete
• add regression test for uncached delete

Testing

• not run (phpunit bootstrap requires installed instance)

Fixes #56493