Add specific UX for Expected UTDs due to membership

[BillCarsonFr]

Fixes https://github.com/element-hq/crypto-internal/issues/219
Fixes https://github.com/element-hq/crypto-internal/issues/221

Draft as based on this rust-sdk PR matrix-org/matrix-rust-sdk#3337

UTD of room with shared history will be presented as:

And the error will be reported to posthog with a newly created code from matrix-analytics-event 0.20

Includes a new string created in localazy.

Pull Request Checklist

• I read the contributing guide
• Pull request contains a changelog file in ./changelog.d
• Pull request includes a sign off

UI changes have been tested with:

• iPhone and iPad simulators in portrait and landscape orientations.
• Dark mode enabled and disabled.
• Various sizes of dynamic type.
• Voiceover enabled.

[github-actions]

	Warnings
⚠️	Some of the commits are missing ticket numbers. Please consider squashing all commits that don't have a tracking number.
⚠️	Please add a sign-off to either the PR description or to the commits themselves.
⚠️	You seem to have made changes to views. Please consider adding screenshots.

Generated by 🚫 Danger Swift against a6b2ae8

[codecov]

Codecov Report

Attention: Patch coverage is 49.09091% with 28 lines in your changes are missing coverage. Please review.

Project coverage is 74.61%. Comparing base (1b8d895) to head (a6b2ae8).

Files	Patch %	Lines
.../Sources/Services/Analytics/AnalyticsService.swift	0.00%	11 Missing ⚠️
...meline/TimelineItems/RoomTimelineItemFactory.swift	0.00%	9 Missing ⚠️
.../FlowCoordinators/UserSessionFlowCoordinator.swift	0.00%	7 Missing ⚠️
...reen/View/Timeline/EncryptedRoomTimelineView.swift	96.42%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2740      +/-   ##
===========================================
- Coverage    74.69%   74.61%   -0.08%     
===========================================
  Files          581      581              
  Lines        40720    40766      +46     
===========================================
+ Hits         30415    30417       +2     
- Misses       10305    10349      +44     

Flag	Coverage Δ
unittests	62.21% <49.09%> (-0.17%)	⬇️

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[pixlwave]

LGTM! Thanks 👍