The ? indicator is missing from the url site params in site editor

[apeatling]

Description

When in the site editor, selecting the canvas to enter canvas editing mode the url looks like this: wp-admin/site-editor.phpcanvas=edit. The ? is missing.

Step-by-step reproduction instructions

1. Open site editor
2. Select a page to edit
3. Click the canvas to enter editing mode
4. Notice the URL and missing ?
5. Refresh the page, the URL is busted.

Screenshots, screen recording, code snippet

No response

Environment info

Gutenberg trunk

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

[tyxla]

Have you tried running npm install, optionally with npm run distclean beforehand?

This is likely because of #60271 which updated the package and the logic to add the ? or not in the same PR.

We did take a note that in the future we should keep those 2 separate (dependency update and logic update)

[apeatling]

Yes this fixed it, thanks!