Fix google maps device_tracker same last seen timestamp (#99963)

* Update device_tracker.py 

This fix the google_maps does not show current location when HA started/restarted and also fix unnecessary update when last_seen timestamp is the same. 
Unnecessary update is causing proximity sensor switching from between stationary and certain direction.

* Remove elif

* Fix Black check

* fix black check

* Update device_tracker.py

Better patch

* Update device_tracker.py

* Update device_tracker.py

Fix Black

* Update device_tracker.py

change warning to debug

homeassistant/components/google_maps/device_tracker.py

@@ -112,12 +112,22 @@ class GoogleMapsScanner:
 
             last_seen = dt_util.as_utc(person.datetime)
             if last_seen < self._prev_seen.get(dev_id, last_seen):
-                _LOGGER.warning(
+                _LOGGER.debug(
                     "Ignoring %s update because timestamp is older than last timestamp",
                     person.nickname,
                 )
                 _LOGGER.debug("%s < %s", last_seen, self._prev_seen[dev_id])
                 continue
+            if last_seen == self._prev_seen.get(dev_id, last_seen) and hasattr(
+                self, "success_init"
+            ):
+                _LOGGER.debug(
+                    "Ignoring %s update because timestamp "
+                    "is the same as the last timestamp %s",
+                    person.nickname,
+                    last_seen,
+                )
+                continue
             self._prev_seen[dev_id] = last_seen
 
             attrs = {