Product list heading/hero (auto)block

[badvision]

The first H1 of the page, if present, should be auto-blocked to look like the following:

The author should not be required to author an actual block on the page, just the first h1 in the first section is used -- Hero can be reused if appropriate, but this is a format specific to product list template pages for now.

Example urls:

• https://www.momentive.com/en-us/categories/encapsulants/conformalcoatings/products
• https://www.momentive.com/en-us/industries/automotive/silane-coupling-agents-for-tires/products

This hero also includes the breadcrumb, as the breadcrumb does not appear in the brand hero (described in #20)

Mobile requirements: The current website does not handle mobile styling well. Consider reducing font and/or relaxing rigid height restrictions in the mobile breakpoint so that the header is readable. Current website:

[badvision]

The auto-blocking logic used for product pages can be re-used for breadcrumb. The hero auto-block is already present, but we will want a different h1 style for plain header on product list template pages (e.g. when body has style of product-list)