Some test fixes where default user is assumed to be user 0

CheckLongPressHelper: Cancelling view longpress which inturn also cancels self
This ensures that long press is properly cancelled if the default timeout for system longpress is same as ours

Bug: 379777736
Bug: 379807782
Bug: 379805363
Bug: 379805788
Bug: 379777734
Bug: 379774350
Flag: EXEMPT bugfix
Test: Presubmit
Change-Id: Ic4d9d6c4f79325a5d7ab98eafa1c86db4c2e67a5