Fix the interactive dismiss gesture of media previews on iOS 18.2

[pixlwave]

The root view was being ignored (well for gestures anyway) as it was clear.

[pixlwave]

The timing of this being called changed from after the animation had completed (which presumably was to do with the preview controller as it doesn't make sense looking at the navigation stack code), to as soon as you lift your finger on the drag (which is too early to undo the flip).

[github-actions]

	Warnings
⚠️	You seem to have made changes to views. Please consider adding screenshots.

Generated by 🚫 Danger Swift against b0e1602

[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]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
906	1	905	0

View the full list of 1 ❄️ flaky tests

PreviewTests test_joinRoomScreen()

Flake rate in main: 23.68% (Passed 58 times, Failed 18 times)

Stack Traces | 4.63s run time

failed - Snapshot "Unknown" does not match reference.

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

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

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

The percentage of pixels that match 0.959198 is less than required 1.0
The lowest perceptual color precision 0.39937502 is less than required 0.98 (PreviewTests/Sources/PreviewTests.swift:84)

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[pixlwave]

Closing this for now, it breaks interaction with the QL controller 🤦‍♂️