Description

When a navigation link does not have a url, but does have a title, the selection from the LinkPicker will overwrite the link's title instead of preserving it.

Step-by-step reproduction instructions

1. Edit a navigation to have an empty link via the code editor view: <!-- wp:navigation-link {"label":"Empty Link"} /-->
2. Select this block via the list view (selecting it on canvas opens the link ui popover on canvas)
3. Use the Link Picker in the inspector sidebar to select a new link
4. The title "Empty Link" will be overwritten by the selected page title.

Screenshots, screen recording, code snippet

Environment info

No response

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