[Bug]: Share Expire Not Based On Default Time Zone

[alperozturk96]

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

The share expiry determination is being conducted based on UTC time, regardless of default time zone.

Steps to reproduce

1. Set 'default_timezone' => 'Asia/Tokyo'
2. Check share expiration time

Expected behavior

Share Expire must be based on given default time zone.

Nextcloud Version

28.0.4

[joshtrichards]

Related PR: #46097

[alperozturk96]

Tested with v29.0.5.1 issue solved.