Show "Links" in "Shared items" in sidebar

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Is your feature request related to a problem? Please describe.
It is simply a slight UX enhancement request.

Describe the solution you'd like
The sidebar on the right hand side of the conversation has been greatly enhanced with the latest Talk update, which has added the Media, Files, Voice messages, Audio, and Locations groups to quickly reach those items in the conversation.
It would be great if there was also another group, Links, to get the list of all the web links / urls that were sent in the conversation.

Describe alternatives you've considered
Not relevant.

Additional context
Many other chat apps do it and I find it really useful.

Ecosystem

• iOS https://github.com/nextcloud/talk-ios/issues/847
• Android maybe https://github.com/nextcloud/talk-android/issues/2029

Start by locating the Talk conversation sidebar implementation and the existing Media, Files, Voice messages, Audio, and Locations groups. Trace how those groups gather and display shared items, then determine how links should be collected and presented alongside them. Done means the sidebar exposes a Links group containing web URLs shared in the conversation, with appropriate coverage in the existing UI tests if available.