Issue #3517936: Fix Ping Pong block link styling to match canada styles theme

This MR fixes the styling of links inside the Ping Pong block when used on sites that implement the ws_canada_styles theme. Previously, links retained default Y-USA styles instead of inheriting the proper colors defined in ws_colorway_canada. The fix ensures consistency across sites like ywinnipeg.ca that rely on Canadian branding.

This ensures that links inside Ping Pong blocks respect the --wsPrimaryColor variable, which is defined in ws_colorway_canada.

📌 Steps to Reproduce:

• Log in to the site (e.g., ywinnipeg.ca) as an admin/editor.
• Create a new Landing Page.
• On the newly created Landing Page, click "Layout" to open Layout Builder.
• Add the Ping Pong block
• In the Description field of any Ping Pong item, add a link, for example: <a href="https://example.com/register">Register online</a>
• Save the block and layout.
• View the landing page on the frontend.

✅ Expected result: The link should use the primary color defined in ws_colorway_canada (via --wsPrimaryColor) and reflect correct branding.