Quality of Life Feat: Opening links in default browser

[A402B]

Clicking on links from chat responses will open them in a new window within the desktop application of OpenWebUI instead of opening a new tab in the default browser from the user.

Please open links in the default browser instead of a webpage opening as part of the OpenWebUI app.

[agamotto]

I second this. Major usability issue. Not even right click allows to copy the url, the only way is to copy the whole response to notepad.

[tjbck]

Addressed!

[agamotto]

It's not working (in Windows at least). Clicking on the links does nothing.

I've submitted PR #170.

src/renderer/src/lib/components/Main/Connections/Content.svelte: Kept allowpopups (required so popup requests propagate to setWindowOpenHandler)