fix(files): Provide default file action for file entry name (on click action)

[susnux]

• Resolves: [Bug]: Hash in filename (e.g. #foo.docx) breaks web interface download #44855
• Resolves: [Bug]: Wrong tooltip (hover) on file and folder names in Nextcloud Files #45678

Summary

This fixes two issues with the files actions:

1. Current the actions were handled by the FileListEntryActions component, and then weirdly accessed through the shadow DOM like $parent.$refs.something this is not reactive and leads to situations where the default actions was not correctly injected -> Tooltip was wrong
2. We had two places where the download action was defined, first the download action and second as a fallback in the name component. So this is consolidated into only one place: The download file action. Meaning the download file action is now a default action. And if this is not injected in the name component, then the user can not download -> no fallback needed.
3. (basically 2.1) the fallback download action was not using the encoded source, thus e.g. names with # were not correctly downloaded.

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)

[susnux]

/backport to stable29

[susnux]

/backport to stable28

[skjnldsv]

Yeah, the old legacy link/action was too weird in the end.
It's much cleaner to only rely on the provided file actions, you're 100% right!