The media end-point is not returning any structured captions, even when they exist in other wikis
Tried wikis: hi, kn, fr
Expected: same structured captions language to caption mapping is returned for a particular image, on any wiki.
Actual: not returning structured captions on non-english wikis
Example: Bill Joel image
We can see structured captions for both "en" and "kn" here :
https://en.wikipedia.org/api/rest_v1/page/media/Billy_Joel
But same image in "kn" doesn't return structured captions
https://kn.wikipedia.org/api/rest_v1/page/media/ಬಿಲ್ಲೀ_ಜೋಯಲ್