Improved paged endpoint rage validation. Fixed smaller request model validation issues

Moonlight.Shared/Http/Requests/Admin/Sys/GenerateDiagnoseRequest.cs

@@ -1,6 +1,9 @@
+using System.ComponentModel.DataAnnotations;
+
 namespace Moonlight.Shared.Http.Requests.Admin.Sys;
 
 public class GenerateDiagnoseRequest
 {
+    [Required(ErrorMessage = "You need to define providers")]
     public string[] Providers { get; set; } = [];
 }