#8630297 eCommerce features: Mention paid plugins

Proposed Changes

• Some of the Business plan features are only available via paid plugins. These features will now be mentioned as “Available with paid plugins”.
• The list of features available via paid plugins is mentioned in pau2Xa-4W0#comment-13597.
• The corresponding landing page changes are in D117255-PR.

Testing Instructions

• Enter the signup flow plans step, at /start/plans.
• Verify that those features mentioned in pau2Xa-4W0#comment-13597 as available with paid plugins are mentioned in the plans grid.
• Verify on both desktop and mobile viewports.