Show the poster image when the max-video-preview:0 meta tag is present

### Description

#38554 added support for the `max-video-preview` [meta tag](https://developers.google.com/search/docs/crawling-indexing/robots-meta-tag#max-video-preview) by ensuring that previews do not exceed the specified value. However, it did not add support for the case where the story contains `max-video-preview:0`. When the value is `0`, the story preview should either should show the poster image instead. The TODO for this logic exists in `amp-story-page.js` [here](https://github.com/ampproject/amphtml/blob/4ce3cd79520dbeaf5ed5364cbff58d3d71dee40e/extensions/amp-story/1.0/amp-story-page.js#L383).

### Reproduction Steps

Can be tested with a story that contains a `max-video-preview:0` meta tag

### Relevant Logs

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### Browser(s) Affected

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### OS(s) Affected

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### Device(s) Affected

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### AMP Version Affected

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Start in extensions/amp-story/1.0/amp-story-page.js at the TODO around line 383, and review the existing max-video-preview handling added for this story flow. Reproduce the issue with a story containing a max-video-preview:0 meta tag; done means the story shows its poster image instead of a video preview.

Written by the indexing model from the issue text.