fix(htaccess): Serve images as static assets

[susnux]

Summary

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]

I hope this fixes the daily instance not serving images correctly (especially webp).

[SystemKeeper]

Makes sense, but guess needs an htaccess update on daily then.

[susnux]

@SystemKeeper yes probably but maybe even some Caddy config update.

[ChristophWurst]

Makes sense

[ChristophWurst]

https://docs.nextcloud.com/server/latest/admin_manual/installation/nginx.html#nextcloud-in-the-webroot-of-nginx will need an update too and should be noted in https://docs.nextcloud.com/server/latest/admin_manual/release_notes/upgrade_to_30.html

[susnux]

But I do not think this is the root cause as locally deployed with Apache it works, only the daily instance with Caddy seems to have problem :(

[susnux]

(I mean it is an improvement anyways)