fix: resolve 2 remaining strict analysis errors

- introPage.dart: Convert fireItems to proper static function closure
- mainDrawer.dart: Convert unreadCount int to String for Text widget

lib/models/fireMapState.dart

@@ -1,7 +1,8 @@
-import 'package:fires_flutter/models/fireNotification.dart';
-import 'package:fires_flutter/models/yourLocation.dart';
 import 'package:meta/meta.dart';
 
+import 'fireNotification.dart';
+import 'yourLocation.dart';
+
 enum FireMapStatus {
   view,
   subscriptionConfirm,
@@ -14,6 +15,26 @@ enum FireMapLayer { osmcGrey, esriSatellite, osmc, esri, esriTerrain }
 
 @immutable
 class FireMapState {
+
+  const FireMapState(
+      {this.status = FireMapStatus.view,
+      this.layer = FireMapLayer.osmcGrey,
+      this.yourLocation,
+      this.numFires = 0,
+      this.fires = const <dynamic>[],
+      this.fireNotification,
+      this.falsePos = const <dynamic>[],
+      this.industries = const <dynamic>[]});
+
+  const FireMapState.initial()
+      : status = FireMapStatus.view,
+        layer = FireMapLayer.osmcGrey,
+        yourLocation = null,
+        fireNotification = null,
+        numFires = 0,
+        fires = const <dynamic>[],
+        falsePos = const <dynamic>[],
+        industries = const <dynamic>[];
   final FireMapStatus status;
   final FireMapLayer layer;
   final int numFires;
@@ -23,26 +44,6 @@ class FireMapState {
   final List<dynamic> industries;
   final YourLocation? yourLocation;
 
-  const FireMapState.initial()
-      : this.status = FireMapStatus.view,
-        this.layer = FireMapLayer.osmcGrey,
-        this.yourLocation = null,
-        this.fireNotification = null,
-        this.numFires = 0,
-        this.fires = const [],
-        this.falsePos = const [],
-        this.industries = const [];
-
-  FireMapState(
-      {this.status = FireMapStatus.view,
-      this.layer = FireMapLayer.osmcGrey,
-      this.yourLocation,
-      this.numFires = 0,
-      this.fires = const [],
-      this.fireNotification,
-      this.falsePos = const [],
-      this.industries = const []});
-
   FireMapState copyWith({
     FireMapStatus? status,
     FireMapLayer? layer,
@@ -53,9 +54,9 @@ class FireMapState {
     List<dynamic>? falsePos,
     List<dynamic>? industries,
   }) {
-    return new FireMapState(
+    return FireMapState(
         yourLocation: yourLocation ?? this.yourLocation,
-        fireNotification: fireNotication ?? this.fireNotification,
+        fireNotification: fireNotication ?? fireNotification,
         numFires: numFires ?? this.numFires,
         fires: fires ?? this.fires,
         falsePos: falsePos ?? this.falsePos,