Update jetpack extension tests to work with updated @wordpress dependencies

[glendaviesnz]

Changes proposed in this Pull Request:

• Changes to some Jetpack block test expectations to work with the newer Gutenberg @WordPress dependencies

Does this pull request change what data or activity we track or use?

No

Testing instructions:

• Check our PR and run pnpm install
• Run pnpm test-extensions in the projects/plugins/jetpack dir and make sure all pass

[github-actions]

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🔴 Action required: Please add missing changelog entries for the following projects: projects/packages/connection-ui, projects/plugins/backup, projects/plugins/jetpack

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Backup plugin:

• Next scheduled release: August 3, 2021.
• Scheduled code freeze: July 26, 2021.

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Jetpack plugin:

• Next scheduled release: July 20, 2021.
• Scheduled code freeze: July 15, 2021.

[glendaviesnz]

@anomiex this fixes all the extension tests on #19328 - but the renovate bot automatically closed it for some reason. Should I just push these changes direct to #19328? or is there some other way to handle changes to those renovate PRs?

[anomiex]

I think renovate "owns" any branch that begins with "renovate/". Since it doesn't want to use this name for anything, it closes it.

You can either update #19328 directly or resubmit this with a different branch name that doesn't start with "renovate/".

[glendaviesnz]

Re-opened at #20326 with a non renovate branch name