Monthly media gallery separators

[stefanceriu]

Add montly separators for the media gallery sections

• change the separator timeline items so that they expose their timestamp instead of a formatted string
• update related snapshots

This PR also fixes the order in which the tiles are presented, with the most recent one now appearing on the bottom right.

[github-actions]

	Warnings
⚠️	Some of the commits are missing ticket numbers. Please consider squashing all commits that don't have a tracking number.
⚠️	You seem to have made changes to views. Please consider adding screenshots.

Generated by 🚫 Danger Swift against a8f4c9f

[codecov]

❌ 3 Tests Failed:

Tests completed	Failed	Passed	Skipped
881	3	878	0

View the top 1 failed tests by shortest run time

MediaUploadPreviewScreenViewModelTests testVideoUploadWithCaption()

Stack Traces | 12.9s run time

Asynchronous wait failed: Exceeded timeout of 10 seconds, with unfulfilled expectations: "Awaiting publisher". (.../Sources/Extensions/XCTestCase.swift:43)

View the full list of 2 ❄️ flaky tests

PreviewTests test_userProfileScreen()

Flake rate in main: 12.90% (Passed 108 times, Failed 16 times)

Stack Traces | 3.1s run time

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

@−
"file:.../__Snapshots__/PreviewTests/test_userProfileScreen-iPhone-16-en-GB.Verified-User.png"
@+
"file:.../tmp/PreviewTests/test_userProfileScreen-iPhone-16-en-GB.Verified-User.png"

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

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

The percentage of pixels that match 0.9031372 is less than required 1.0
The lowest perceptual color precision 0.31062502 is less than required 0.98 (PreviewTests/Sources/PreviewTests.swift:84)

PreviewTests test_joinRoomScreen()

Flake rate in main: 20.00% (Passed 40 times, Failed 10 times)

Stack Traces | 3.74s 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 0.966095 is less than required 1.0
The lowest perceptual color precision 0.39937502 is less than required 0.98 (PreviewTests/Sources/PreviewTests.swift:84)

To view more test analytics, go to the Test Analytics Dashboard
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[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