Fix decoding of a single role claim.

Author: peombwa

src/Authentication/Authentication/Helpers/JwtHelpers.cs

@@ -29,8 +29,7 @@ internal static string Decode(string jwToken)
             if (jwtHandler.CanReadToken(jwToken))
             {
                 JwtSecurityToken token = jwtHandler.ReadJwtToken(jwToken);
-                JwtPayload jwtPayload = new JwtPayload(token.Claims);
-                return jwtPayload.SerializeToJson();
+                return token.Payload.SerializeToJson();
             } else {
                 return null;
             }

src/Authentication/Authentication/Properties/launchSettings.json

@@ -2,7 +2,7 @@
   "profiles": {
     "Graph.Authentication": {
       "commandName": "Executable",
-      "executablePath": "C:\\Program Files\\PowerShell\\7-preview\\pwsh.exe",
+      "executablePath": "C:\\Program Files\\PowerShell\\7\\pwsh.exe",
       "commandLineArgs": "-NoProfile -NoExit"
     }
   }