When I add a page link to the navigation block and select the option to create a draft page, the new nav menu item shows up in the editor but is not visible in the preview. I think this might be related to #29395 and #29397.

Steps to reproduce:

1. Open the site editor and start editing the site header.
2. Add navigation block, and add a new link inside. (or add a new item to the existing navigation block).
3. Start typing a page name and select the "Create draft page" option when it's offered.
4. The new link will be added to the menu in the editor.
5. Save and preview. The new link is not visible on the front end.

Expected behaviour

I expected the link to the draft page to show up in preview.

Screenshots or screen recording (optional)

WordPress information

• WordPress version: 5.6.2
• Gutenberg version: 10.0.2
• Are all plugins except Gutenberg deactivated? YES
• Are you using a default theme (e.g. Twenty Twenty-One)? TT1 Blocks

Device information

• Device: Desktop
• Operating system: macOS 10.15.7
• Browser: Chrome 88.0