Studio: Bubble up path validation error

[katinthehatsite]

Closes https://github.com/Automattic/dotcom-forge/issues/9069

Proposed Changes

This PR adds a new error indication to the add site form for the case when:

• there is an error related to the Local path address
• AND the Advanced settings tab is closed

Testing Instructions

• Pull the changes from this branch
• Start the app with nvm use && npm install && npm start
• Create a site with the name My WordPress Site in Studio
• Try creating a second site with the same name My WordPress Site
• Observe that you can see the text 1 error found and the Advanced settings text goes red
• Open the Advanced settings and see the full error
• Change the site name to something else
• Observe that the error goes away and the Advanced settings text goes back to the usual color

RToz6tIuQ7nlZrikBte4GU-fi-3748_312092

Pre-merge Checklist

• Have you checked for TypeScript, React or other console errors?

[wojtekn]

there is an error related to the Local path address
AND the Advanced settings tab is closed

This description could suggest that the error is relayed only if those two conditions are true, but based on my tests, I see it is relayed also when Advanced settings are open. However, I think it's even better that way.

[katinthehatsite]

This description could suggest that the error is relayed only if those two conditions are true, but based on my tests, I see it is relayed also when Advanced settings are open. However, I think it's even better that way.

Thanks @wojtekn - yeah this was the original intention and it is the description that failed me 😅