Clock widget with multiple times

### Feature Description

It would be nice to either 1: allow the widget to have multiple times visible (either on the bar or tooltip), or, allow each widget to have its own timezone, config, etc.

### Use Case

I work with people in multiple timezones. It would be nice to have a quick view of the times they are in. Also nice for systems admin since logs are often in UTC time

### Compositor(s)

All compositors

### If Other, please specify

_No response_

### Proposed Solution

_No response_

### Alternatives/Existing Solutions

_No response_

Locate the clock widget and inspect how its displayed time and per-widget configuration are currently represented. Compare the two proposed directions—multiple visible times or separate widget timezones—and clarify the intended scope before implementation. Done means the chosen behavior is defined and works for the stated multi-timezone and UTC use cases across all compositors.

Written by the indexing model from the issue text.