fix: use correct case for Location key in read_play_stats

src/ipod_nano7_db.py

@@ -934,7 +934,7 @@ class Nano7Database:
 
         tracks = data.get("mhlt", [])
         for track in tracks:
-            loc = track.get("location", "")
+            loc = track.get("Location") or track.get("location", "")
             if not loc:
                 continue
             base_stats[loc] = {
@@ -953,7 +953,7 @@ class Nano7Database:
                 for i, entry in enumerate(entries):
                     if i >= len(tracks):
                         break
-                    loc = tracks[i].get("location", "")
+                    loc = tracks[i].get("Location") or tracks[i].get("location", "")
                     if not loc:
                         continue
                     delta_stats[loc] = {