[PS-1009] Changed keyboard on Passphrase generator to not allow emojis (#2038)

* PS-1009 Added effect to Entry that doesn't allow keyboard with emojis on passphrase separator

* PS-1009 Removed unnecessary ImeOptions setting from NoEmojiKeyboardEffect
Improved code

* PS-1009 Removed unnecessary null validation on Android's NoEmojiKeyboardEffect

Co-authored-by: Federico Maccaroni <fedemkr@gmail.com>

src/iOS.Core/Effects/NoEmojiKeyboardEffect.cs

@@ -0,0 +1,25 @@
+using System;
+using Bit.iOS.Core.Effects;
+using UIKit;
+using Xamarin.Forms;
+using Xamarin.Forms.Platform.iOS;
+
+[assembly: ExportEffect(typeof(NoEmojiKeyboardEffect), nameof(NoEmojiKeyboardEffect))]
+namespace Bit.iOS.Core.Effects
+{
+    public class NoEmojiKeyboardEffect : PlatformEffect
+    {
+        protected override void OnAttached()
+        {
+            if (Element != null && Control is UITextField textField)
+            {
+                textField.KeyboardType = UIKeyboardType.ASCIICapable;
+            }
+        }
+
+        protected override void OnDetached()
+        {
+        }
+    }
+}
+

src/iOS.Core/iOS.Core.csproj

@@ -203,6 +203,7 @@
     <Compile Include="Utilities\UISearchBarExtensions.cs" />
     <Compile Include="Renderers\CollectionView\CollectionException.cs" />
     <Compile Include="Renderers\CollectionView\ExtendedGroupableItemsViewDelegator.cs" />
+    <Compile Include="Effects\NoEmojiKeyboardEffect.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\App\App.csproj">