Description

Template Parts: aria-label is [object Object] on preview button

Step-by-step reproduction instructions

1. Go to Editor > Patterns > All Template Parts
2. Inspect on any Preview

Expected: aria-label is the Template Part name (case from WordPress 6.6)
Actual: aria-label is [object Object]

Screenshots, screen recording, code snippet

Environment info

WordPress 6.7 RC 2

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