R1:84f62bdf9a79

Move ported inlines which appear on nonvisible lines backward so they show up

Summary:
Ref T7447. Ref T7870. See T7870 for a detailed description of this issue.

NOTE: Replying to these inlines from the UI still does the wrong thing, because we use the database line number, not the UI line number.

Test Plan:
Before:

{F377732}

After:

{F377733}

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T7447, T7870

Differential Revision: https://secure.phabricator.com/D12491