Add observe mode supported assumption for setShouldDefaultToObserveMode

GSI builds that don't have observe mode supported shouldn't run this
test

Bug: 345113523
Test: atest CtsNfcTestCases:android.nfc.cts.CardEmulationTest#testSetShouldDefaultToObserveModeShouldDefaultToObserveMode -- --abi arm64-v8a \
Change-Id: Idd97def9d4e0bcc0ebc646ce703a08edbd5fda2b
1 file changed