fix(files): do not let a failing move hook break the move or hide files

[solracsf]

• Resolves: files disappear after movement groupfolders#4548

Summary

When renameFromStorage() moves a cache entry below a parent that is not in the cache, Cache::moveFromCache() attaches it to parent -1. The entry then no longer shows up in any folder listing until the next scan.

Additionally, OC_Hook::emit() actually catches Exceptions thrown by hook handlers so that a failing handler cannot break the operation that emitted the signal, but PHP Errors (TypeError etc.) escaped. A post hook handler failing with an Error therefore failed the whole request after the operation had already been performed. Catch Throwable instead.

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)
• Labels added where applicable (ex: bug/enhancement, 3. to review, feature component)
• Milestone added for target branch/version (ex: 32.x for stable32)

AI (if applicable)

• The content of this PR was partly or fully generated using AI