Migrate breadcrumbs liquid template to breadcrumbs web component

[micahchiang]

Description

If an application in the content-build registry.json file includes breadcrumbs, then it'll use the liquid template provided in content-build found here.

Of the 109 application entries in that registry file, there are 47 applications explicitly setting includeBreadcrumbs: true and 5 which set that property to false. So a little under 50% look to be using the aforementioned liquid template.

All instances that don't have the includeBreadcrumbs flag, or set it to false, are likely using a web component to manage their breadcrumbs.

We need to update this template to use the va-breadcrumbs web component instead of the unordered list it currently uses.

Considerations

• Testing this will probably mean running the static pages for vets-website. Directions for how to run those can be found here.

Tasks

• replace the unordered list in the liquid template above with the va-breadcrumbs component and verify it functions as expected

Acceptance Criteria

• Tasks have been completed.

[humancompanion-usds]

Sitewide is going to handle this change here:
#2741

We'll assist in whatever way they need.