refactor: improve URL validation in NavigationUrlHelper (#807)

Author: wzh425

src/Masa.Stack.Components/Infrastructure/NavigationUrlHelper.cs

@@ -8,7 +8,7 @@ public static string BuildHref(string? url, string projectPrefix, Uri currentUri
         {
             return projectPrefix;
         }
-
+        
         if (TryBuildHrefFromAbsoluteUrl(url, projectPrefix, currentUri, out var absoluteHref))
         {
             return absoluteHref;
@@ -21,6 +21,12 @@ private static bool TryBuildHrefFromAbsoluteUrl(string url, string projectPrefix
     {
         href = string.Empty;
 
+        if (!url.StartsWith("http://", StringComparison.OrdinalIgnoreCase) &&
+            !url.StartsWith("https://", StringComparison.OrdinalIgnoreCase))
+        {
+            return false;
+        }
+
         if (!Uri.TryCreate(url, UriKind.Absolute, out var absoluteUri))
         {
             return false;