#7089496 Emails: Disable Google Workspace with monthly billing and add Titan logo to In-Depth Comparison page

This pull request updates the In-Depth Comparison page to show a message and disable the Select button for Google Workspace when monthly billing is selected. It also adds a Powered By Titan logo for Professional Email:

Desktop	Mobile

Testing instructions

Note you will have to append ?flags=emails/in-depth-comparison to the url of the page (and reload it) if you’re testing those changes on a live branch as this feature has not been enabled on this environment yet:

1. Run git checkout update/in-depth-comparison-page-2 and start your server, or access a live branch
2. Log into a WordPress.com account with a domain but no email
3. Open the Emails page
4. Click the Add Email button of that domain to access the Email Comparison page
5. Click the See how they compare link to access the In-Depth Comparison page
6. Click the Pay monthly toggle
7. Assert that Only available with annual billing is shown instead of a price for Google Workspace
8. Assert that Select button is disabled for Google Workspace