Submission Review Guidelines:

• I have followed the WooCommerce Contributing Guidelines and the WordPress Coding Standards.
• I have checked to ensure there aren't other open Pull Requests for the same update/change.
• I have reviewed my code for security best practices.
• Following the above guidelines will result in quick merges and clear and detailed feedback when appropriate.

Changes proposed in this Pull Request:

Closes #36925.

The automated tax screen is only visible when all store details (address, zip code, city) are filled in. However, these fields are not mandatory in the first step.

Thus, when a user connects the Jetpack/WCS without filling in all fields, the user is redirected to the first step without any error message.

This PR makes all fields mandatory to fix the issue.

p1677138140476049/1676907287.360079-slack-C01SFMVEYAK

How to test the changes in this Pull Request:

Using the WooCommerce Testing Instructions Guide, include your detailed testing instructions:

1. Install and activate WooCommerce in a brand new site
2. Go to the WooCommerce onboarding wizard.
3. Choose US as store country on the store details step
4. Click on the Continue button without filling out other fields
5. Go to WooCommerce > Home and click on Add tax rates task from Task list
6. Click on the Continue button
7. Observe that it displays form validation error messages

8. Fill out all fields
9. Click on the Continue button
10. Should go to next step