added new test case code

Author: TamilarasanSF4853

src/Controls/tests/TestCases.Shared.Tests/Tests/FeatureMatrix/DatePickerFeatureTests.cs

@@ -31,6 +31,8 @@ public void DatePicker_InitialState_VerifyVisualState()
 #elif IOS
         App.WaitForElement("Done");
         App.Tap("Done");
+#elif WINDOWS
+        App.Tap("25");
 #endif
         VerifyScreenshot();
     }
@@ -50,6 +52,8 @@ public void DatePicker_ModifyOldDateAndNewDate_VerifyVisualState()
 #elif IOS
         App.WaitForElement("Done");
         App.Tap("Done");
+#elif WINDOWS
+        App.Tap("26");
 #endif
         VerifyScreenshot();
     }
@@ -76,6 +80,8 @@ public void DatePicker_OldDateAndNewDate_VerifyVisualState()
 #elif IOS
         App.WaitForElement("Done");
         App.Tap("Done");
+#elif WINDOWS
+        App.Tap("27");
 #endif
         VerifyScreenshot();
     }