Fix auto-sizing the inlineEditor when forcing an auto-size.
When editing Markdown in Review Board, the inlineEditor will sometimes

size itself too short. This seemed to be due to telling it to animate

when forcing, which was probably not what we wanted. By forcing

animation to be off in this case, the sizing matches what is expected.

Edited a sample Markdown text area I have, which was consistently wrong

in its size when opening. It matched correctly after this change.