GitHub snippet codeintel is broken

Created by: felixfbecker

Go to https://github.com/sourcegraph/sourcegraph/issues/3085#L133, hover over tokens in the snippet.

Console error:

file_info.ts:72 Uncaught Error: Unable to determine the file path of the current file because the current URL (window.location https://github.com/sourcegraph/sourcegraph/issues/3085#L133) does not have a file path.
    at Object.resolveFileInfo (file_info.ts:72)
    at MergeMapSubscriber.project (code_intelligence.tsx:488)
    at MergeMapSubscriber._tryNext (mergeMap.ts:141)
    at MergeMapSubscriber._next (mergeMap.ts:132)
    at MergeMapSubscriber.Subscriber.next (Subscriber.ts:100)
    at MergeMapSubscriber.notifyNext (mergeMap.ts:170)
    at InnerSubscriber._next (InnerSubscriber.ts:18)
    at InnerSubscriber.Subscriber.next (Subscriber.ts:100)
    at MergeMapSubscriber.notifyNext (mergeMap.ts:170)
    at InnerSubscriber._next (InnerSubscriber.ts:18)

Seems like code some part of the code only expects single file blob pages.