Fix inverted logic in isOperationRestricted

SensorService::isOperationRestricted incorrectly returned 'true'
whenever the Sensor Service was in normal mode and an application was
not whitelisted. This patch corrects the logic and updates the
function's name to be isOperationPermitted to avoid confusion.

Bug: 128028800
Test: CTS Direct Channel tests pass
Change-Id: Ia1684be54c1c7c0db81d8fcb2780fd2583a35537