Fix: Space scope header overflow

[kerryarchibald]

Fixes element-hq/element-web#26645

• clamps space scope header to one line, adds title attribute to show full title
• extracts scope header into component
• updates ThirdPartyRoomMemberInfo to use BaseCard and compound components
• puts scope header into BaseCard header in all screens

Before:

After:

Checklist

• Tests written for new code (and old code if feasible)
• Linter and other CI checks pass
• Sign-off given on the changes (see CONTRIBUTING.md)

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Here's what your changelog entry will look like:

🐛 Bug Fixes

• Fix: Space scope header overflow (#11933). Fixes Space member list title partially outside of browser viewport element-hq/element-web#26645. Contributed by @kerryarchibald.