The spacing on breadcrumbs in Form should be updated per design guidance

[janechu]

Update the breadcrumb style in the <Form /> per design guidance.

[bheston]

The padding on the slash separator is currently 8px, but should be 4px in compact density. If this is using or can use the Breadcrumb component, spacing should be 4px, 5px, 6px in compact, normal, and spacious density.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.