Enable the media browser feature 🖼️

[pixlwave]

This PR makes the following changes:

• Moves the download indicator from a toast to a custom overlay on the screen.
• Localises a handful of strings that were waiting for confirmation (adding a download error state).
• Removes the feature flag for the media browser.
• Updates the SDK to 0.9.0 ready for release.

[github-actions]

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

Generated by 🚫 Danger Swift against b5b63c1

[stefanceriu]

Super duper cool! 👏

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
908	1	907	0

View the top 1 failed tests by shortest run time

PreviewTests test_loginScreen()

Stack Traces | 4.23s run time

failed - Snapshot "matrix.org" does not match reference.

@−
"file:.../__Snapshots__/PreviewTests/test_loginScreen-iPhone-16-en-GB.matrix-org.png"
@+
"file:.../tmp/PreviewTests/test_loginScreen-iPhone-16-en-GB.matrix-org.png"

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

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

The percentage of pixels that match 0.8511963 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