CmdPal: Add settings to control which fallbacks are enabled (#40505)

This adds settings to each provider to allow us to control if individual
fallback items are enabled or not, regardless of the provider being
enabled.

This is relevant to _all the threads where disabling fallback commands
came up_

This just adds another section to each provider's settings page, with a
list of the fallback commands.

This also has nothing to do with the "top-level apps search", which is
not really a fallback command - it's its own thing.

Ref #38288. Doesn't close that, because this only controls
enable/disable, not ranking.

From here, we should be able to add a dedicated page in the SUI that
shows all the fallbacks across all providers. That's where we'll enable
the ordering.

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/FallbackExecuteSearchItem.cs

@@ -17,7 +17,7 @@ internal sealed partial class FallbackExecuteSearchItem : FallbackCommandItem
     private static readonly CompositeFormat PluginOpen = System.Text.CompositeFormat.Parse(Properties.Resources.plugin_open);
 
     public FallbackExecuteSearchItem(SettingsManager settings)
-        : base(new SearchWebCommand(string.Empty, settings), Resources.command_item_title)
+        : base(new SearchWebCommand(string.Empty, settings) { Id = "com.microsoft.websearch.fallback" }, Resources.command_item_title)
     {
         _executeItem = (SearchWebCommand)this.Command!;
         Title = string.Empty;

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/FallbackOpenURLItem.cs

@@ -7,7 +7,6 @@ using System.Globalization;
 using System.Text;
 using Microsoft.CmdPal.Ext.WebSearch.Commands;
 using Microsoft.CmdPal.Ext.WebSearch.Helpers;
-using Microsoft.CmdPal.Ext.WebSearch.Properties;
 using Microsoft.CommandPalette.Extensions.Toolkit;
 using BrowserInfo = Microsoft.CmdPal.Ext.WebSearch.Helpers.DefaultBrowserInfo;
 
@@ -20,7 +19,7 @@ internal sealed partial class FallbackOpenURLItem : FallbackCommandItem
     private static readonly CompositeFormat PluginOpenUrlInBrowser = System.Text.CompositeFormat.Parse(Properties.Resources.plugin_open_url_in_browser);
 
     public FallbackOpenURLItem(SettingsManager settings)
-        : base(new OpenURLCommand(string.Empty, settings), string.Empty)
+        : base(new OpenURLCommand(string.Empty, settings), Properties.Resources.open_url_fallback_title)
     {
         _executeItem = (OpenURLCommand)this.Command!;
         Title = string.Empty;

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Properties/Resources.Designer.cs

@@ -132,6 +132,15 @@ namespace Microsoft.CmdPal.Ext.WebSearch.Properties {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Open URL.
+        /// </summary>
+        public static string open_url_fallback_title {
+            get {
+                return ResourceManager.GetString("open_url_fallback_title", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to the default browser.
         /// </summary>

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.WebSearch/Properties/Resources.resx

@@ -178,4 +178,7 @@
   <data name="settings_page_name" xml:space="preserve">
     <value>Settings</value>
   </data>
+  <data name="open_url_fallback_title" xml:space="preserve">
+    <value>Open URL</value>
+  </data>
 </root>