fix: current time widget shows build time instead of visitor's time

[archiik04]

Fixes #712

The "Current Time" box on the community page showed the time the site was built, not the visitor's actual time, because new Date() ran once on the build server. This PR wraps the clock formatting in a stateful Clock component and renders it client-side with <BrowserOnly>, updating the time in real-time.

Before screenshot

Live Production Site (time stays frozen at 06:40):

First check:

Several minutes later (still shows 06:40):

After screenshot

Local Site (time updates dynamically):

Initial load (shows 06:40):

One minute later (advances to 06:41):

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