Handle bindService errors in ObservableServiceConnection

If the component doesn't exist, or if we don't have permission to bind
to it, a SecurityException is thrown. In this case, we should return
false instead of crashing the process.

Bug: 271997433
Test: atest ObservableServiceConnectionTest
Change-Id: I2869e3438ead888b20ab00f643ac37e4373e924e