Fix for Playwright Timeout (ms) interpreted as seconds.
To address https://github.com/open-webui/open-webui/issues/16801
In Frontend Playwright Timeout is setted as (ms), but in backend is interpreted as (s) doing a time conversion for playwright_timeout var (that have to be in ms).
& as _Originally posted by @rawbby in [#16801](https://github.com/open-webui/open-webui/issues/16801#issuecomment-3216782565)_
> I personally think milliseconds are a reasonable choice for the timeout. Maybe the conversion should be fixed, not the label.
> This would further not break existing configurations from users that rely on their current config.
>
093af754e7