Fix autocomplete in input forms
Summary:
The changes in D26494 broke autocomplete for all object types
besides users (like projects, wiki links, etc.).
Test Plan:
Go to an input field (e.g., comment field), try various
autocompletes. like hash, colon, etc. Also verify that
involved users still works (go to a task and check
sort order of user suggestions after typing @).
Reviewers: aklapper, O1 Blessed Committers
Reviewed By: aklapper, O1 Blessed Committers
Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno
Differential Revision: https://we.phorge.it/D26681