modified code changes

Author: NirmalKumarYuvaraj

src/Core/src/Platform/Android/MauiPicker.cs

@@ -14,8 +14,6 @@ public class MauiPicker : MauiPickerBase
 		public MauiPicker(Context context) : base(context)
 		{
 			PickerManager.Init(this);
-			// To prevent user from entering text when focus is received
-			KeyListener = null;
 		}
 
 		public override bool OnTouchEvent(MotionEvent? e)

src/Core/src/Platform/Android/PickerManager.cs

@@ -42,7 +42,8 @@ static void OnKeyPress(object? sender, AView.KeyEventArgs e)
 		{
 			if (!AvailableKeys.Contains(e.KeyCode))
 			{
-				e.Handled = false;
+				//To prevent user from entering text when focus is received
+				e.Handled = true;
 				return;
 			}
 			e.Handled = true;