Stop repeating the simulator version throughout the Fastfile.

[pixlwave]

The UI and integration tests are currently failing due to a missing (OS version) in the run_tests. Whilst playing with #4662 and #4664 I came up with a few simplifications so applied them all here at once.

UI Tests run: https://github.com/element-hq/element-x-ios/actions/runs/18945869921
Integration Tests run: https://github.com/element-hq/element-x-ios/actions/runs/18945866100
Accessibility Test run: https://github.com/element-hq/element-x-ios/actions/runs/18945872002

[sonarqubecloud]

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 SonarQube Cloud

[codecov]

❌ 4 Tests Failed:

Tests completed	Failed	Passed	Skipped
1143	4	1139	0

View the top 1 failed test(s) by shortest run time

RoomMembersListScreenUITests::testJoinedAndInvitedMembers()

Stack Traces | 16.2s run time

failed - Snapshot "testJoinedAndInvitedMembers-iPhone-26.0-en-GB" does not match reference.

@−
"file:.../__Snapshots__/Application/roomMembersListScreen.testJoinedAndInvitedMembers-iPhone-26-0-en-GB.png"
@+
"file:.../__FailedScreenshots__/Application/roomMembersListScreen.testJoinedAndInvitedMembers-iPhone-26-0-en-GB.png"

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

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

The percentage of pixels that match 0.95947266 is less than required 0.99
The lowest perceptual color precision 0.0006250143 is less than required 0.98 (UITests/Sources/Application.swift:89)

View the full list of 3 ❄️ flaky test(s)

DeferredFulfillmentTests::testObservableAsynchronousUpdate()

Flake rate in main: 32.42% (Passed 221 times, Failed 106 times)

Stack Traces | 11.9s run time

Asynchronous wait failed: Exceeded timeout of 10 seconds, with unfulfilled expectations: "Awaiting stream". (.../Other/Extensions/XCTestCase.swift:77)

EncryptionSettingsUITests::testFlow()

Flake rate in main: 33.67% (Passed 195 times, Failed 99 times)

Stack Traces | 28.6s run time

failed - Snapshot "testFlow-iPhone-26.0-en-GB-1" does not match reference.

@−
"file:.../__Snapshots__/Application/encryptionSettings.testFlow-iPhone-26-0-en-GB-1.png"
@+
"file:.../__FailedScreenshots__/Application/encryptionSettings.testFlow-iPhone-26-0-en-GB-1.png"

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

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

The percentage of pixels that match 0.28466797 is less than required 0.99
The lowest perceptual color precision 0.0006250143 is less than required 0.98 (UITests/Sources/Application.swift:89)

UserFlowTests::testUserFlow()

Flake rate in main: 41.42% (Passed 99 times, Failed 70 times)

Stack Traces | 400s run time

XCTAssertTrue failed (IntegrationTests/Sources/UserFlowTests.swift:44)

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[pixlwave]

Seems like all the test suites run on the simulators fine (even if they aren't passing).