QS tile transition fixes.

- Don't change QS tile icons until state color transition animations are
complete.
- Wait up to 350ms for wifi to turn from on -> off before handling
updated state in anticipation of wifi turning off.

Change-Id: Id4a761b88d4f499acd6d00a97f4f5980f2e4b206
Fixes: 77026682
Test: visual
2 files changed