PageContent: Fix unlock import

[andrewserong]

What?

A small follow-up to #51281 and #51322 to fix up an import so that unlock is imported from the correct location.

Why?

The above two PRs were merged in quick succession, so unfortunately this import was missed.

How?

Update the import line for the PageContent component, so that it imports from lock-unlock as in #51322.

Testing Instructions

• Check that the static analysis / linting jobs pass
• To be thorough, open up the site editor browse mode, select Pages, and click to edit a page in your site
• In the right-hand sidebar, you should see the block quick navigation

Screenshots or screencast

This is the component that should still be rendering correctly:

[ramonjd]

👍

[andrewserong]

Thanks for the review! The Performance Tests action appears to be failing because it can't be built in trunk:

I think we might need to manually merge this one while skipping the Performance tests if anyone has access to merge this in?

[noisysocks]

Ugh, sorry about that, thanks for fixing!

[andrewserong]

No worries, thanks for merging! 🎉

[github-actions]

Flaky tests detected in 59d2793.
Some tests passed with failed attempts. The failures may not be related to this commit but are still reported for visibility. See the documentation for more information.

🔍 Workflow run URL: https://github.com/WordPress/gutenberg/actions/runs/5217670474
📝 Reported issues:

• [Flaky Test] Pick the additional variation in the inserted Columns block #47057 in specs/editor/plugins/block-variations.test.js