Special:Browse use structured array instead of hash

[mwjames]

This PR is made in reference to: https://twitter.com/48pedia/status/1220697188948303873

This PR addresses or contains:

• Uses a structured array instead of a simple hash to make sure the API request uses the correct key hereby fixes an edge case (see link) where the subobject name contains # as part of the name (not as part of the identifier)

This PR includes:

• Tests (unit/integration)
• CI build passed

[mwjames]

https://sandbox.semantic-mediawiki.org/wiki/Issue/4452

@kghbln FYI, Browsing of either Issue/4452##Foo or Issue/4452##好きなんだ is the issue here.

Semantic MediaWiki　Has subobjectの「#好きなんだ」どうすればいいのか

あの質問の答えは「新たにリリースを発表することを待つべきです。」