NOT TO MERGE: bug test case for fonts API

[oandregal]

Test case for bug reported at https://github.com/WordPress/gutenberg/pull/50297/files#r1189573512

[github-actions]

Flaky tests detected in 1f3b781.
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/4935059568
📝 Reported issues:

• [Flaky Test] should be able to create an hierarchical post without title support #36939 in /test/e2e/specs/editor/plugins/custom-post-types.spec.js

[oandregal]

Closing this because #50297 was reverted at #50512. Even closed, it can still serve the purpose of highlighting the issue.