Add userId in identity change warning banner

[bmarty]

Content

Ensure userId is displayed in the warning about identity changed banner.

Motivation and context

Closes #3678

Screenshots / GIFs

See the recorded ones.

Tests

• Step 1
• Step 2
• Step ...

Tested devices

• Physical
• Emulator
• OS version(s):

Checklist

• Changes have been tested on an Android device or Android emulator with API 23
• UI change has been tested on both light and dark themes
• Accessibility has been taken into account. See https://github.com/element-hq/element-x-android/blob/develop/CONTRIBUTING.md#accessibility
• Pull request is based on the develop branch
• Pull request title will be used in the release note, it clearly define what will change for the user
• Pull request includes screenshots or videos if containing UI changes
• Pull request includes a sign off
• You've made a self review of your PR

[github-actions]

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

Attention: Patch coverage is 91.89189% with 3 lines in your changes missing coverage. Please review.

Project coverage is 82.81%. Comparing base (717d1b2) to head (6392404).
Report is 11 commits behind head on develop.

Files with missing lines	Patch %	Lines
...mpl/crypto/identity/IdentityChangeStateProvider.kt	85.71%	2 Missing ⚠️
...nt/android/libraries/matrix/api/room/RoomMember.kt	66.66%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #3686   +/-   ##
========================================
  Coverage    82.81%   82.81%           
========================================
  Files         1748     1748           
  Lines        41777    41804   +27     
  Branches      5108     5109    +1     
========================================
+ Hits         34597    34622   +25     
- Misses        5365     5366    +1     
- Partials      1815     1816    +1     

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