Tweak ordering of first match search

- Tweak iteration for finding first match, go by operator priority and
  check each cell layout by order to return the first view that matches
- Also reset the launch cookie in cases where we're launching a task
  that doesn't support cookies (ie. via prediction), otherwise we may
  still try to associate it with the last launched cookie later

Fixes: 187720286
Test: Swipe up from various icon types across hotseat/workspace
Change-Id: I71c4c13c442b0884b2247589685f976eaaeb30a4
Signed-off-by: Winson Chung <winsonc@google.com>