R1:ca56e8590a3d

Don't handle JIRA/Asana URIs with anchors or query parameters in a special way (with Doorkeeper)

Summary:
Ref T13291. See PHI1312. Currently, if you link to a JIRA or Asana issue with an anchor (`#asdf`) or query parameters (`?a=b`), we:

- treat the link as an external object reference and attempt a lookup on it;
- if the lookup succeeds, we discard the fragment or parameters when re-rendering the rich link (with the issue/task title).

Particularly, the re-rendering part uses the canonical URI of…