[Gutenberg][TEST] Try drag & drop blocks feature

[fluiddot]

NOTE: This PR was created only for generating an installable build for testing the drag & drop blocks feature.

To test:
N/A

Regression Notes

1. Potential unintended areas of impact

2. What I did to test those areas of impact (or what existing automated tests I relied on)

3. What automated tests I added (or what prevented me from doing so)

PR submission checklist:

• I have completed the Regression Notes.
• I have considered adding unit tests for my changes.
• 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.

[wpmobilebot]

You can test the WordPress changes on this Pull Request by downloading it from AppCenter here with build number: pr18206-4c1d196. IPA is available here. If you need access to this, you can ask a maintainer to add you.

[wpmobilebot]

You can test the Jetpack changes on this Pull Request by downloading it from AppCenter here with build number: pr18206-4c1d196. IPA is available here. If you need access to this, you can ask a maintainer to add you.

[wpmobilebot]

You can test the changes in Jetpack from this Pull Request by:

• Clicking here or scanning the QR code below to access App Center
• Then installing the build number pr18206-b58894d on your iPhone

If you need access to App Center, please ask a maintainer to add you.

[wpmobilebot]

You can test the changes in WordPress from this Pull Request by:

• Clicking here or scanning the QR code below to access App Center
• Then installing the build number pr18206-b58894d on your iPhone

If you need access to App Center, please ask a maintainer to add you.

[peril-wordpress-mobile]

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[fluiddot]

Closing this PR as the drag & drop feature is already merged.