Description

Following ticket #45516 from Core we need to have some degree of consistency between post titles specifically when post title is not supported by the post type

Step-by-step reproduction instructions

1. Create a new post type without adding title to supports
2. Ideally, use Core's PR 9597
3. Create a new post from this new post type
4. In the Document Bar, we will see No Title instead of the expected (no title supported)

Screenshots, screen recording, code snippet

No response

Environment info

• WordPress: 6.9-beta3-61129-src
• PHP: 8.2.29
• Server: nginx/1.29.3
• Database: mysqli (Server: 8.4.7 / Client: mysqlnd 8.2.29)
• Browser: Chrome 142.0.0.0
• OS: Windows 10/11
• Theme: Twenty Twenty-Five 1.3
• MU Plugins: None activated
• Plugins:
  • BBB Testing Dolly
  • Gutenberg 22.0.0

Please confirm that you have searched existing issues in the repo.

• Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

• Yes

Please confirm which theme type you used for testing.

• Block
• Classic
• Hybrid (e.g. classic with theme.json)
• Not sure