Add field to record state of telephony fallback

Add a metrics field to record the state of telephony fallback support on
a device.

Test: build only
Bug: 197624972
Bug: 200279201
Bug: 208789974
Change-Id: I0f7bd9f087e87dc4f0c92f9ad7bff9db88f9f8e3

services/core/java/com/android/server/stats/pull/StatsPullAtomService.java

@@ -3435,7 +3435,8 @@ public class StatsPullAtomService extends SystemService {
                     convertTimeZoneSuggestionToProtoBytes(
                             metricsState.getLatestTelephonySuggestion()),
                     convertTimeZoneSuggestionToProtoBytes(
-                            metricsState.getLatestGeolocationSuggestion())
+                            metricsState.getLatestGeolocationSuggestion()),
+                    metricsState.isTelephonyTimeZoneFallbackSupported()
             ));
         } catch (RuntimeException e) {
             Slog.e(TAG, "Getting time zone detection state failed: ", e);