=== Issue 1: mobile-html on zhwiki
While researching the parent issue, I noticed that the action=mobileview request did not provide a value for `thumbwidth`.
Our request looks like:
https://zh.wikipedia.org/w/api.php?format=json&formatversion=2&action=mobileview&page=MediaWiki%3AConversiontable%2Fzh-hans&prop=text%7Csections%7Clanguagecount%7Cthumb%7Cimage%7Cid%7Crevision%7Cdescription%7Clastmodified%7Cnamespace%7Cnormalizedtitle%7Cdisplaytitle%7Cprotection%7Ceditable§ions=all§ionprop=toclevel%7Cline%7Canchor&noheadings=true&thumbwidth=
which returns:
```lang=json
{
"error": {
"code": "badinteger",
"info": "Invalid value \"\" for integer parameter \"thumbwidth\".",
"docref": "See https://zh.wikipedia.org/w/api.php for API usage. Subscribe to the mediawiki-api-announce mailing list at <https://lists.wikimedia.org/mailman/listinfo/mediawiki-api-announce> for notice of API deprecations and breaking changes."
}
}
```
=== Issue 2: mobile-sections of File pages
The other issue detected in the code was in mobile-sections output:
Example URL: http://localhost:8888/commons.wikimedia.org/v1/page/mobile-sections/File:The%20Golden%20Gate%20Bridge%20and%20Comet%20C2020%20F3%20NEOWISE%20and.jpg
The "imageinfo" property was not showing `thumburl`, `thumbwidth`, and `thumbheight`.
==== Actual
```lang=json
"imageinfo": {
"url": "https://upload.wikimedia.org/wikipedia/commons/8/85/The_Golden_Gate_Bridge_and_Comet_C2020_F3_NEOWISE_and.jpg",
"descriptionurl": "https://commons.wikimedia.org/wiki/File:The_Golden_Gate_Bridge_and_Comet_C2020_F3_NEOWISE_and.jpg",
"descriptionshorturl": "https://commons.wikimedia.org/w/index.php?curid=92180852"
},
```
=== Expected
```lang=json
"imageinfo": {
"thumburl": "https://upload.wikimedia.org/wikipedia/commons/thumb/8/85/The_Golden_Gate_Bridge_and_Comet_C2020_F3_NEOWISE_and.jpg/800px-The_Golden_Gate_Bridge_and_Comet_C2020_F3_NEOWISE_and.jpg",
"thumbwidth": 800,
"thumbheight": 533,
"url": "https://upload.wikimedia.org/wikipedia/commons/8/85/The_Golden_Gate_Bridge_and_Comet_C2020_F3_NEOWISE_and.jpg",
"descriptionurl": "https://commons.wikimedia.org/wiki/File:The_Golden_Gate_Bridge_and_Comet_C2020_F3_NEOWISE_and.jpg",
"descriptionshorturl": "https://commons.wikimedia.org/w/index.php?curid=92180852"
},
```