Switch UI tests back to the perf-only runner.

[pixlwave]

They're not passing yet, but this at least lets CI report the failures we need to fix.

[github-actions]

	Warnings
⚠️	Some of the commits are missing ticket numbers. Please consider squashing all commits that don't have a tracking number.

Generated by 🚫 Danger Swift against 429f7c2

[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]

❌ 2 Tests Failed:

Tests completed	Failed	Passed	Skipped
837	2	835	0

View the full list of 2 ❄️ flaky tests

PreviewTests test_identityConfirmationScreen()

Flake rate in main: 16.81% (Passed 94 times, Failed 19 times)

Stack Traces | 2.1s run time

failed - Snapshot does not match reference.

@−
"file:.../__Snapshots__/PreviewTests/test_identityConfirmationScreen-iPhone-16-pseudo.1.png"
@+
"file:.../tmp/PreviewTests/test_identityConfirmationScreen-iPhone-16-pseudo.1.png"

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

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

The percentage of pixels that match 0.94415283 is less than required 1.0
The lowest perceptual color precision 0.39937502 is less than required 0.98 (.../PreviewTests/Sources/PreviewTests.swift:84)

PreviewTests test_joinRoomScreen()

Flake rate in main: 20.75% (Passed 84 times, Failed 22 times)

Stack Traces | 3s run time

failed - Snapshot "Unknown" does not match reference.

@−
"file:.../__Snapshots__/PreviewTests/test_joinRoomScreen-iPhone-16-en-GB.Unknown.png"
@+
"file:.../tmp/PreviewTests/test_joinRoomScreen-iPhone-16-en-GB.Unknown.png"

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

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

The percentage of pixels that match 0.9661255 is less than required 1.0
The lowest perceptual color precision 0.39999998 is less than required 0.98 (.../PreviewTests/Sources/PreviewTests.swift:84)

To view individual test run time comparison to the main branch, go to the Test Analytics Dashboard