URLPopover: Long URL is not truncated

[t-hamano]

Description

If the URL is long, most popovers should limit us to a certain width. However, after #57608 is merged, all URLs are displayed and the width does not seem to be restricted.

This may cause the controls on the right (Edit, Remove link, Link settings) to protrude off the screen, making it impossible to re-edit the URL.

Step-by-step reproduction instructions

• Insert an Image block.
• Apply a long url (example: https://make.wordpress.org/core/handbook/tutorials/linking-your-github-and-w-org-profiles/#4-add-your-wordpress-org-git-email-to-your-github-email-list)

Screenshots, screen recording, code snippet

Before #57608 is merged:

After #57608 is merged

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