chore: Updating to 5.4 Stable

Author: vatsashah45

reference/Counter/CSharp-MVVM/Counter/Counter.csproj

@@ -31,6 +31,8 @@
     -->
     <!-- <WindowsSdkPackageVersion>10.0.22621.28</WindowsSdkPackageVersion> -->
 
+    <WindowsSdkPackageVersion>10.0.19041.38</WindowsSdkPackageVersion>
+
     <!--
       UnoFeatures let's you quickly add and manage implicit package references based on the features you want to use.
       https://aka.platform.uno/singleproject-features

reference/Counter/CSharp-MVVM/global.json

@@ -1,6 +1,6 @@
 {
   // To update the version of Uno please update the version of the Uno.Sdk here. See https://aka.platform.uno/upgrade-uno-packages for more information.
   "msbuild-sdks": {
-    "Uno.Sdk": "5.3.90"
+    "Uno.Sdk": "5.4.5"
   }
 }

reference/Counter/XAML-MVVM/Counter/Counter.csproj

@@ -31,6 +31,8 @@
     -->
     <!-- <WindowsSdkPackageVersion>10.0.22621.28</WindowsSdkPackageVersion> -->
 
+    <WindowsSdkPackageVersion>10.0.19041.38</WindowsSdkPackageVersion>
+
     <!--
       UnoFeatures let's you quickly add and manage implicit package references based on the features you want to use.
       https://aka.platform.uno/singleproject-features

reference/Counter/XAML-MVVM/global.json

@@ -1,6 +1,6 @@
 {
   // To update the version of Uno please update the version of the Uno.Sdk here. See https://aka.platform.uno/upgrade-uno-packages for more information.
   "msbuild-sdks": {
-    "Uno.Sdk": "5.3.90"
+    "Uno.Sdk": "5.4.5"
   }
 }