fix: Fix ServiceWorker scope when Nextcloud installed in subfolder

[Koc]

Summary

1. Install Nextcloud into subfolder, e.g. nc
2. Open files app

Expected result: ServiceWorker registered only for subfolder
Actual result: ServiceWorker registered for whole domain

🔍 Screenshot after fix

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)

[Koc]

/backport to stable30

[Koc]

/compile

[provokateurin]

I think this is broken, we now register a service worker for each path:

There only should be one service worker, otherwise we will consume a lot of resources after navigating through a few folders and so on.

[provokateurin]

Fix is at #49917

[github-actions]

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