modules/clock: does not respect the locale/environment variable LC_TIME

[danielfrrrr]

When using a configuration like this:

{"modules-center": ["clock"], "clock": {"format": "{:%x | %A | %B}", "locale": "pt_BR.UTF-8"}}

...the date, week name and month name do not respect configuration "locale": "pt_BR.UTF-8" and environment variable LC_TIME=pt_BR.UTF-8. Incorrectly displaying this way:

(12/29/2025 | Monday | December)

...instead of this way:

29/12/2025 | segunda | dezembro