Profiles: Add status and call fields to RoomMember and the UI crate's Profile.

[pixlwave]

Builds on top of #6685, this PR reads the stored global profiles and combines the user status fields into the various room member profile types in the SDK.

Requires #6703 (as it uses the same feature).

• I've documented the public API changes in the appropriate changelog files (see Writing changelog entries).
• This PR was made with the help of AI.

[codspeed-hq]

Merging this PR will not alter performance

✅ 50 untouched benchmarks

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_{Comparing doug/user-status (ff3c136) with main (7bf142a)}

[codecov]

Codecov Report

❌ Patch coverage is 96.51741% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.96%. Comparing base (cac3d7c) to head (ff3c136).
⚠️ Report is 19 commits behind head on main.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
crates/matrix-sdk-ui/src/timeline/tasks.rs	66.66%	5 Missing ⚠️
crates/matrix-sdk-base/src/room/members.rs	97.10%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6704      +/-   ##
==========================================
+ Coverage   89.93%   89.96%   +0.03%     
==========================================
  Files         398      398              
  Lines      111153   111350     +197     
  Branches   111153   111350     +197     
==========================================
+ Hits        99961   100179     +218     
+ Misses       7401     7386      -15     
+ Partials     3791     3785       -6     

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