#7082003 Add form validation to the woo installer address step

Changes proposed in this Pull Request

• Add form validation to the woo installer’s address step.

Testing instructions

• Go to http://calypso.localhost:3000/woocommerce-installation/?flags=woop
• Choose a non atomic site (atomic won’t work until JP updates with new country endpoint data)
• Click set up my store
• You should be taken to the address step (when the woop flag is active)
• Clicking the continue button should fail with validation errors until the form is completed correctly.
• Once completing the install and transfer flow you’ll land on Woo’s original setup profile, your address should be prepopulated using atomic data – though I noticed a timing issue with fetching country info (the form errored)

Before

After

Fixes #59857