[Accessibility] Providing labels for alternative content #3808
Description
Describe the bug
Transcripts and other alternative content can be uploaded, but is not clearly labeled as such.
For example, if someone uploads a video (with audio), s/he can upload a transcript, but there is no label for "Transcript" or "Alternative Content".
Expected behavior
Create a label/field for alternative content. Ideally, prompt users to upload alternative content.