Handle non-image media content in stories

Some of the story detail pages could include non-image media content (videos, animations, audio). We need to handle each of these types of media (ie, a video link gets transformed into an embedded video, etc.)

### Expected Behaviour

### Actual Behaviour

### Reproduce Scenario (including but not limited to)

#### Steps to Reproduce

#### Platform and Version

#### Sample Code that illustrates the problem

#### Logs taken while reproducing problem

No files, tests, or entry points are named. Start by locating the story detail page implementation and its media rendering path, then verify that video, animation, and audio links receive the expected embedded treatment.

Written by the indexing model from the issue text.