Handle missing data more gracefully in fetchAppDetails

[zner0L]

I tried getting the metadata of jp.foonline.store. This app has no ratings, resulting in data[51][0] being null and an TypeError: Cannot read properties of null (reading '0') at

parse-play/src/endpoints/app-details.ts

Line 189 in 1e42ad9

rating: data[51][0][1],

I think some missing data should be fine here and I expected fetchAppDetails to just return an incomplete result instead of failing completely. In any case, since some apps just don’t have ratings, parseAppDetailsPayload should not rely on it being there.