Use Type aliasing instead of macros

The .NET Formatter breaks in these scenarios.
Improves maintainability of code in the long run.

Author: Nirmal4G

Microsoft.Toolkit.Uwp.Notifications/Adaptive/AdaptiveProgressBar.cs

@@ -2,11 +2,19 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
+#pragma warning disable SA1121 // UseBuiltInTypeAlias
+
+using System;
+using Microsoft.Toolkit.Uwp.Notifications.Adaptive.Elements;
+
 #if WINRT
 using System.Collections.Generic;
+using BindableProgressBarValue = Microsoft.Toolkit.Uwp.Notifications.AdaptiveProgressBarValue;
+using BindableString = System.String;
+#else
+using BindableProgressBarValue = Microsoft.Toolkit.Uwp.Notifications.BindableProgressBarValue;
+using BindableString = Microsoft.Toolkit.Uwp.Notifications.BindableString;
 #endif
-using System;
-using Microsoft.Toolkit.Uwp.Notifications.Adaptive.Elements;
 
 namespace Microsoft.Toolkit.Uwp.Notifications
 {
@@ -25,46 +33,22 @@ public sealed class AdaptiveProgressBar : IToastBindingGenericChild
         /// <summary>
         /// Gets or sets an optional title string. Supports data binding.
         /// </summary>
-        public
-#if WINRT
-            string
-#else
-            BindableString
-#endif
-            Title { get; set; }
+        public BindableString Title { get; set; }
 
         /// <summary>
         /// Gets or sets the value of the progress bar. Supports data binding. Defaults to 0.
         /// </summary>
-        public
-#if WINRT
-            AdaptiveProgressBarValue
-#else
-            BindableProgressBarValue
-#endif
-            Value { get; set; } = AdaptiveProgressBarValue.FromValue(0);
+        public BindableProgressBarValue Value { get; set; } = AdaptiveProgressBarValue.FromValue(0);
 
         /// <summary>
         /// Gets or sets an optional string to be displayed instead of the default percentage string. If this isn't provided, something like "70%" will be displayed.
         /// </summary>
-        public
-#if WINRT
-            string
-#else
-            BindableString
-#endif
-            ValueStringOverride { get; set; }
+        public BindableString ValueStringOverride { get; set; }
 
         /// <summary>
         /// Gets or sets a status string (Required), which is displayed underneath the progress bar. This string should reflect the status of the operation, like "Downloading..." or "Installing..."
         /// </summary>
-        public
-#if WINRT
-            string
-#else
-            BindableString
-#endif
-            Status { get; set; }
+        public BindableString Status { get; set; }
 
         internal Element_AdaptiveProgressBar ConvertToElement()
         {

Microsoft.Toolkit.Uwp.Notifications/Adaptive/AdaptiveText.cs

@@ -2,10 +2,17 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
+#pragma warning disable SA1121 // UseBuiltInTypeAlias
+
+using System;
+using Microsoft.Toolkit.Uwp.Notifications.Adaptive.Elements;
+
 #if WINRT
 using System.Collections.Generic;
+using BindableString = System.String;
+#else
+using BindableString = Microsoft.Toolkit.Uwp.Notifications.BindableString;
 #endif
-using Microsoft.Toolkit.Uwp.Notifications.Adaptive.Elements;
 
 namespace Microsoft.Toolkit.Uwp.Notifications
 {
@@ -29,13 +36,7 @@ public sealed class AdaptiveText
         /// Gets or sets the text to display. Data binding support added in Creators Update,
         /// only works for toast top-level text elements.
         /// </summary>
-        public
-#if WINRT
-            string
-#else
-            BindableString
-#endif
-            Text { get; set; }
+        public BindableString Text { get; set; }
 
         /// <summary>
         /// Gets or sets the target locale of the XML payload, specified as a BCP-47 language tags