fix(files): Correctly handle open file URL query

[susnux]

• Alternative for fix: Do not skip handleOpenFile calls on initial load #47014

Summary

There were 3 issues:

1. The openfile is set on the query not as a param
2. It is called openfile not openFile
3. When redirecting to a file the viewer should open by default, so we need to set the openfile query on the redirect.

Sadly we can not really test this as the viewer is not included.

Screen recording

Bildschirmaufnahme_20240803_141453.webm

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)

[juliushaertl]

/compile

[susnux]

/backport to stable29

[susnux]

/backport to stable28