Don't turn all static resources dynamic

Make sure users explicitly enable this feature, because otherwise it produces too many false positives and breaks things.

Fixes #9
Also see #24

samples/HotReloadDemo/Views/AddItemView.axaml

@@ -25,7 +25,7 @@
             Command="{Binding OkCommand}">
       Ok
     </Button>
-    <TextBox x:Name="DescriptionTextBox" AcceptsReturn="true" Text="{Binding Description}" Watermark="{StaticResource AddItemWatermark}"/>
+    <TextBox x:Name="DescriptionTextBox" AcceptsReturn="true" Text="{Binding Description}" Watermark="{'StaticResource' AddItemWatermark}"/>
   </DockPanel>
 
 </UserControl>

src/HotAvalonia/Helpers/AvaloniaControlHelper.cs

@@ -230,10 +230,10 @@ private static void Attach(object? control, ILogical? logicalParent, AvaloniaObj
     /// <returns>The XAML markup with static resources replaced by their dynamic counterparts.</returns>
     private static string MakeStaticComponentsDynamic(string xaml)
     {
-        const string staticResourceName = "\"{StaticResource ";
-        const string dynamicResourceName = "\"{DynamicResource ";
+        const string StaticResourceName = "\"{'StaticResource' ";
+        const string DynamicResourceName = "\"{'DynamicResource' ";
 
-        return xaml.Replace(staticResourceName, dynamicResourceName);
+        return xaml.Replace(StaticResourceName, DynamicResourceName);
     }
 }