Fix framework crash

Catch the correct exception on transport failure (CancelledException for
PendingIntents). This leads to a crash in very rare race conditions (a
location must be in the process of being delivered to the given
PendingIntent at almost the exact moment that it is canceled, such that
the canceled notification reaches the PendingIntent implementation
before it reaches the location service, and the location is delivered
after the notification reaches the PendingIntent implementation but
before it reaches the location service.

Bug: 198558226
Test: presubmits
Change-Id: I20d30b534781c3aee805d80e66048a04e79a530c