Fix Issue with WinUI disrupting padding of TokenizingTextBox

Need to understand how to default icon size to the proper size in style, not sure if possible, may need to copy somehow instead?

Author: michael-hawker

Microsoft.Toolkit.Uwp.SampleApp/SamplePages/TokenizingTextBox/TokenizingTextBoxXaml.bind

@@ -16,7 +16,7 @@
       <controls:TokenizingTextBox
           x:Name="TokenBox"
           PlaceholderText="Add Actions"
-          QueryIcon="{ex:SymbolIconSource Glyph=Setting}"
+          QueryIcon="{ex:SymbolIconSource Glyph=Setting, FontSize=16}"
           MaxHeight="104"
           HorizontalAlignment="Stretch"
           TextMemberPath="Text"
@@ -52,7 +52,7 @@
             PlaceholderText="Select Names"
             MaxHeight="104"
             HorizontalAlignment="Stretch"
-            QueryIcon="{ex:SymbolIconSource Glyph=Find}"
+            QueryIcon="{ex:SymbolIconSource Glyph=Find, FontSize=16}"
             TextMemberPath="Text"
             TokenDelimiter=","
             IsItemClickEnabled="True">

Microsoft.Toolkit.Uwp.UI.Controls/TokenizingTextBox/TokenizingTextBoxItem.AutoSuggestBox.xaml

@@ -2,6 +2,9 @@
                     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                     xmlns:controls="using:Microsoft.Toolkit.Uwp.UI.Controls">
 
+    <!--<Thickness x:Key="ButtonPadding">8,4,8,5</Thickness> Not sure if we'll also need this later-->
+    <Thickness x:Key="TextControlThemePadding">10,3,6,6</Thickness><!-- Need local copy of this, as including WinUI overrides this to something that adds too much padding for our inner box -->
+    
     <!--#region Button Styles -->
     <Style x:Key="TokenizingTextBoxDeleteButtonStyle"
            TargetType="Button">