sensorservice: Track Proximity state change when app goes idle.

This tracks the Proximity state change when an app subscribed to the
Proximity sensor goes idle and its connection is paused.

Bug: b/202328704
Tests: See b/202328704#comment9 for tests done.
Change-Id: Ib7a08010d903406b67940de56a49e9efb200ad68
diff --git a/services/sensorservice/SensorService.cpp b/services/sensorservice/SensorService.cpp
index 3529798..bdbae7b 100644
--- a/services/sensorservice/SensorService.cpp
+++ b/services/sensorservice/SensorService.cpp
@@ -333,6 +333,7 @@
             conn->onSensorAccessChanged(hasAccess);
         }
     }
+    checkAndReportProxStateChangeLocked();
 }
 
 bool SensorService::hasSensorAccess(uid_t uid, const String16& opPackageName) {