gh-144849: Unit test fails if ran with Europe/Dublin locale

[notdanhan]

• Issue: Unit test fails in Python 3.13 Lib/tests/test_time.py if ran with Europe/Dublin locale #144849

[python-cla-bot]

All commit authors signed the Contributor License Agreement.

[bedevere-app]

Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool.

If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.

[StanFromIreland]

We’ve thought about skipping this test before (which this essentially is), but decided it is better to fix the implementation instead.

[notdanhan]

We’ve thought about skipping this test before (which this essentially is), but decided it is better to fix the implementation instead.

I'm pretty sure that one of the two test assertions I disabled failed because it's implementing ISO 8601 correctly?

(The other ended up checking "GMT" == "IST" but whatever)