[amp story shopping] PDP template logic

[processprocess]

Description

1. Render the activeProduct within the PDP
2. Render a PLP with the activeProduct filtered out

Back button logic is part of #36731
Details module is part of #36740
PLP logic is part of #36732

When templates are switched, make the previous template hidden.
This allows templates to be transitioned, as well as preventing the template from being re-built if the user navigates back.
Templates will be unloaded as part of #37517

[processprocess]

Fixed by #37535