Stop setting up CallKit sessions when joining calls

[stefanceriu]

• comes following the discussions on https://developer.apple.com/forums//thread/767949?answerId=812951022#812951022
• this removes the lock screen controls entirely and lets the rest of the app behave normally

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
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]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
848	1	847	0

View the full list of 1 ❄️ flaky tests

PreviewTests test_roomMemberDetailsScreen()

Flake rate in main: 18.79% (Passed 696 times, Failed 161 times)

Stack Traces | 25.5s run time

failed - Snapshot "Verified User" does not match reference.

@−
"file:.../__Snapshots__/PreviewTests/test_roomMemberDetailsScreen-iPhone-16-pseudo.Verified-User.png"
@+
"file:.../tmp/PreviewTests/test_roomMemberDetailsScreen-iPhone-16-pseudo.Verified-User.png"

To configure output for a custom diff tool, use 'withSnapshotTesting'. For example:

    withSnapshotTesting(diffTool: .ksdiff) {
      // ...
    }

The percentage of pixels that match 0.83825684 is less than required 1.0
The lowest perceptual color precision 0.148125 is less than required 0.98 (.../PreviewTests/Sources/PreviewTests.swift:84)

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[pixlwave]

LGTM

Noting here that we discussed offline about not needing CXEndCallAction and CXSetMutedCallAction but want to do that in a follow-up with more testing.