Summary

This PR adds Hyve promo to WPMM's Onboarding Wizard and Chatbot screen. It also fixes an issue I spotted while working that Checkbox on Wizard for installation consent is almost invisible due to some CSS variables not existing.

Will affect visual aspect of the product

YES

Screenshots

Test instructions

• Make sure the plugin is installed properly, and the notices only appear if the plugin doesn't exist on your site.

Check before Pull Request is ready:

• I have written a test and included it in this PR
• I have run all tests and they pass
• The code passes when running the PHP CodeSniffer
• Code meets WordPress Coding Standards for PHP, HTML, CSS and JS
• Security and Sanitization requirements have been followed
• I have assigned a reviewer or two to review this PR (if you're not sure who to assign, we can do this step for you)

Closes https://github.com/Codeinwp/hyve/issues/19.