ui(manager): improve search bindings

ModpackUpdater.Apps.Manager/Ui/UpdatesCollectorView.axaml

@@ -26,15 +26,14 @@
       <TextBox
         Grid.Row="0"
         Watermark="Search"
-        Text="{Binding SearchText}"
-        TextChanged="TextBoxSearch_OnTextChanged"/>
+        Text="{Binding Updates.SearchText}"/>
 
       <!-- ScrollViewer: Updates -->
       <ScrollViewer
         Grid.Row="1">
 
         <ItemsControl
-          ItemsSource="{Binding Updates}">
+          ItemsSource="{Binding Updates.View}">
 
           <ItemsControl.ItemTemplate>
             <DataTemplate>
@@ -43,8 +42,7 @@
                 ColumnDefinitions="20*,20*,20*,Auto"
                 ColumnSpacing="6"
                 RowSpacing="6"
-                Margin="3"
-                IsVisible="{Binding Visible}">
+                Margin="3">
 
                 <!-- Label: Name -->
                 <TextBlock