Validator doesn't understand different layouts for different types of amp-carousels #20374
Description
From https://www.ampproject.org/docs/reference/components/amp-carousel#type
<amp-carousel type=carousel> for example, doesn't support the responsive layout.
The AMP Validator allows the superset of all layouts for either carousel or slides types. This is OK, but being more specific would produce more actionable information for developers when trying to build a page with an <amp-carousel>.
The plan is to constrain type=slides or unset type to the layouts:
supported_layouts: FILL
supported_layouts: FIXED
supported_layouts: FIXED_HEIGHT
supported_layouts: FLEX_ITEM
supported_layouts: INTRINSIC
supported_layouts: NODISPLAY
supported_layouts: RESPONSIVE
And to constrain type=carousel to the layouts:
supported_layouts: FIXED
supported_layouts: FIXED_HEIGHT
supported_layouts: NODISPLAY
I think this is the correct set of supported layouts.