Remove info-level lint issues: avoid_dynamic_calls, use_build_context_synchronously, avoid_print, non_constant_identifier_names

- Type dynamic map accesses properly (avoid_dynamic_calls in genericMap, globalFiresBottomStats)
- Capture context before async gaps (use_build_context_synchronously in genericMap, genericMapBottom, globalFiresBottomStats)
- Replace print() with debugPrint() (avoid_print in firesApi.dart)
- Rename fireMarker function and _LayerSelectorButton to camelCase
- Rename variable FireNotifications to fireNotifications
- Fix no_default_cases in switch statements (add missing subscriptionConfirm case)
- Make FireNotification fields final, remove @immutable from YourLocation (mutable)
- Make monitoredAreas field final in _ViewModel
- Update subscribeViaApi to use copyWith instead of direct field assignment

lib/models/firesApi.dart

@@ -133,7 +133,7 @@ class FiresApi {
     final String url =
         '${state.firesApiUrl}fires-in-full/${state.firesApiKey}/$lat/$lon/$distance';
     if (globals.isDevelopment) {
-      print(url);
+      debugPrint(url);
     }
     try {
       final Response<dynamic> response = await _dio.get(url);
@@ -218,7 +218,7 @@ class FiresApi {
               response.data as Map<String, dynamic>;
           final Map<String, dynamic> dataData =
               data['data'] as Map<String, dynamic>;
-          print(dataData['upsert']);
+          debugPrint(dataData['upsert'].toString());
         }
         return true;
       } else {