Ensure that ProximityCheck runs on Main thread.

Fixes: 157816056
Test: manual
Change-Id: I0425d76119bf5f5739170ccd701ad44f541e1b82

packages/SystemUI/src/com/android/systemui/util/sensors/ProximitySensor.java

@@ -253,7 +253,7 @@ public class ProximitySensor {
         private final AtomicBoolean mRegistered = new AtomicBoolean();
 
         @Inject
-        public ProximityCheck(ProximitySensor sensor, DelayableExecutor delayableExecutor) {
+        public ProximityCheck(ProximitySensor sensor, @Main DelayableExecutor delayableExecutor) {
             mSensor = sensor;
             mSensor.setTag("prox_check");
             mDelayableExecutor = delayableExecutor;