Dateinput3 'Now' is not considering timezone specifications

[hgjengedal]

Environment

• Package version(s):
• Operating System: MacOS 15.3
• Browser name and version: Google Chrome Version 133.0.6943.54

Code Sandbox

Link to a minimal repro (fork this code sandbox):

Steps to reproduce

1. Set the DateInput field to a static timezone
2. Click 'Now' in the calendar view

Actual behavior

The 'Now' output is in the local timezone. E.g. 09:30 in GMT+1

Expected behavior

I would expect the 'Now' output to the UTC timezone format. E.g. 8:30 UTC.