rename claims used to calculate user title to be consistent across backend.

Author: devinleighsmith

api/Helpers/Extensions/ClaimsPrincipalExtensions.cs

@@ -83,7 +83,7 @@ public static string FullName(this ClaimsPrincipal claimsPrincipal) =>
             claimsPrincipal.FindFirstValue("name");
 
         public static string FirstName(this ClaimsPrincipal claimsPrincipal) =>
-            claimsPrincipal.FindFirstValue("given_name");
+            claimsPrincipal.FindFirstValue(ClaimTypes.GivenName);
 
         public static string UserType(this ClaimsPrincipal claimsPrincipal)
         {
@@ -101,7 +101,7 @@ public static string UserTitle(this ClaimsPrincipal claimsPrincipal) =>
                 : claimsPrincipal.FirstName() + " " + claimsPrincipal.LastName();
 
         public static string LastName(this ClaimsPrincipal claimsPrincipal) =>
-            claimsPrincipal.FindFirstValue("family_name");
+            claimsPrincipal.FindFirstValue(ClaimTypes.Surname);
 
         public static bool HasPermissions(
             this ClaimsPrincipal claimsPrincipal,