Newly added menu links are invisible until published

I was 100% sure we had test coverage for this, so I looked into it and turns out it's a problem that can only be reproduced in the UI, and even though WorkspaceMenuLinkContentIntegrationTest is a functional test, it's doing CRUD operations on menu links via API calls :/

Opened a MR for it, and the bug can be easily tested by changing the existing coverage to do menu link operations via the UI, as it should :)

Btw, the problem is not only for sub workspaces, top-level ones have the same issue.

Following the steps

1. Standard Drupal install
2. Enable workspaces
3. Go to stage space
4. Create a menu link
5. Go back to live space
6. Don't see menu link

Applying MR fixes the problem.

1) Drupal\Tests\workspaces\Functional\WorkspaceMenuLinkContentIntegrationTest::testWorkspacesWithCustomMenuLinks
Behat\Mink\Exception\ExpectationException: Link with label stage link not found.
/builds/issue/drupal-3438771/core/tests/Drupal/Tests/WebAssert.php:587
/builds/issue/drupal-3438771/core/tests/Drupal/Tests/WebAssert.php:313
/builds/issue/drupal-3438771/core/modules/workspaces/tests/src/Functional/WorkspaceMenuLinkContentIntegrationTest.php:106
/builds/issue/drupal-3438771/vendor/phpunit/phpunit/src/Framework/TestResult.php:729
ERRORS!
Tests: 1, Assertions: 14, Errors: 1.

Shows the test coverage

Committed/pushed to 11.x and cherry-picked 10.3.x, thanks!

Automatically closed - issue fixed for 2 weeks with no activity.