Resolve all high-severity architecture review findings

src/ZB.MOM.WW.ScadaBridge.CentralUI/Services/SecuredWriteService.cs

@@ -1,3 +1,4 @@
+using ZB.MOM.WW.ScadaBridge.CentralUI.Auth;
 using System.Security.Claims;
 using System.Text.Json;
 using Akka.Actor;
@@ -165,7 +166,7 @@ public sealed class SecuredWriteService : ISecuredWriteService
     /// </summary>
     private async Task<AuthenticatedUser> BuildAuthenticatedUserAsync()
     {
-        var state = await _auth.GetAuthenticationStateAsync();
+        var state = await _auth.GetAuthoritativeStateAsync();
         var principal = state.User;
 
         var username = principal.FindFirst(JwtTokenService.UsernameClaimType)?.Value ?? "unknown";