Currently category breadcrumbs have a complex logic in order to display similar Explore children pages.

Tasks

• Remove the Explore customization and fetch Post category

Requirements

• Since in theory a Post can have multiple categories, let's display only one of them.
• Feature flag under Planet 4 > Information architecture.
  — Title: Posts categories breadcrumbs
  — Description: Show Post's first category on breadcrumbs navigation, instead of Explore issues.