R1:caa15b173221

Fix jump nav for new search stuff

Summary: Ref T4365. Aligns jump nav with the normal search behavior.

Test Plan: Typed some junk into the jump nav, mashed return.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T4365

Differential Revision: https://secure.phabricator.com/D8136