[Gutenberg] Audio block - Consolidated & Normal Media Picker Integration

[jd-alexander]

gutenberg: WordPress/gutenberg#27401
gutenberg-mobile PR: wordpress-mobile/gutenberg-mobile#2854
WPiOS PR: wordpress-mobile/WordPress-iOS#15420
FluxCAndroid wordpress-mobile/WordPress-FluxC-Android#1823

This PR's content was already reviewed here

To test:
To verify the behavior you can utilize the instructions in the PR above.

PR submission checklist:

• I have considered adding unit tests where possible.
• I have considered adding accessibility improvements for my changes.
• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

[peril-wordpress-mobile]

You can trigger optional UI/connected tests for these changes by visiting CircleCI here.

[jd-alexander]

@develric I will remove the [Status] Not Ready for Merge label once the gutenberg-mobile and gutenberg PRs have been reviewed.

[peril-wordpress-mobile]

You can test the changes on this Pull Request by downloading the APK here.

[develric]

Hey @jd-alexander 👋 , checked this as per #13612 instructions and can confirm the behavior is ok (confirm also the system picker notes from that PR, but it's a known thing 👍 ).

I'm approving it; feel free to move it ahead as soon as other dependencies are delivered 🙇 (and of course it goes without say, just ping me if anything needed from my side, happy to make another check round in case dependencies change 👍 ).

[jd-alexander]

I updated the base branch on this PR to gutenberg/after_1.45.0 since the release is in process.