Fix Null Exception with filters (#17407)

Co-authored-by: Mike Alhayek <[email protected]>

Author: github-actions[bot]

src/OrchardCore.Modules/OrchardCore.Facebook/Filters/FacebookPixelFilter.cs

@@ -39,7 +39,7 @@ public async Task OnResultExecutionAsync(ResultExecutingContext context, ResultE
             {
                 var settings = await _siteService.GetSettingsAsync<FacebookPixelSettings>();
 
-                if (settings is not null)
+                if (!string.IsNullOrEmpty(settings?.PixelId))
                 {
                     _resourceManager.RegisterHeadScript(new HtmlContentBuilder([_preamble, _jsEncoder.Encode(settings.PixelId), _end]));
                 }

src/OrchardCore.Modules/OrchardCore.Google/Analytics/GoogleAnalyticsFilter.cs

@@ -43,7 +43,7 @@ public async Task OnResultExecutionAsync(ResultExecutingContext context, ResultE
             {
                 var settings = await _siteService.GetSettingsAsync<GoogleAnalyticsSettings>();
 
-                if (settings is not null)
+                if (!string.IsNullOrEmpty(settings?.TrackingID))
                 {
                     _resourceManager.RegisterHeadScript(new HtmlContentBuilder([_preamble, _urlEncoder.Encode(settings.TrackingID), _middle, _jsEncoder.Encode(settings.TrackingID), _end]));
                 }

src/OrchardCore.Modules/OrchardCore.Google/TagManager/GoogleTagManagerFilter.cs

@@ -16,7 +16,7 @@ public sealed class GoogleTagManagerFilter : IAsyncResultFilter
     private readonly JavaScriptEncoder _jsEncoder;
 
     private static readonly HtmlString _preamble = new("<!-- Google Tag Manager -->\n<script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':\n  new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],\n  j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=\n  'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);\n  })(window,document,'script','dataLayer','");
-    private static readonly HtmlString _end= new HtmlString("');</script>\n<!-- End Google Tag Manager -->");
+    private static readonly HtmlString _end = new HtmlString("');</script>\n<!-- End Google Tag Manager -->");
 
     public GoogleTagManagerFilter(
         IResourceManager resourceManager,
@@ -39,7 +39,7 @@ public async Task OnResultExecutionAsync(ResultExecutingContext context, ResultE
             {
                 var settings = await _siteService.GetSettingsAsync<GoogleTagManagerSettings>();
 
-                if (settings is not null)
+                if (!string.IsNullOrEmpty(settings?.ContainerID))
                 {
                     _resourceManager.RegisterHeadScript(new HtmlContentBuilder([_preamble, _jsEncoder.Encode(settings.ContainerID), _end]));
                 }