'System.Dynamic.ExpandoObject' does not contain a definition for 'propertiesToUpdate'

[MikeAlhayek]

Describe the bug

if we use UseScriptToSyncRoles option in the login settings and provide a script that does not use propertiesToUpdate property, we get the following exception.

eUserAsync threw an exception Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: 'System.Dynamic.ExpandoObject' does not contain a definition for 'propertiesToUpdate'
   at CallSite.Target(Closure, CallSite, Object)
   at System.Dynamic.UpdateDelegates.UpdateAndExecute1[T0,TRet](CallSite site, T0 arg0)
   at CallSite.Target(Closure, CallSite, Object)
   at OrchardCore.Users.Handlers.ScriptExternalLoginEventHandler.UpdateUserInternal(UpdateUserContext context, LoginSettings loginSettings)
   at OrchardCore.Users.Handlers.ScriptExternalLoginEventHandler.UpdateUserAsync(UpdateUserContext context)
   at OrchardCore.Users.Controllers.AccountController.ExternalLoginSignInAsync(IUser user, ExternalLoginInfo info)    at CallSite.Target(Closure, CallSite, Object)
   at System.Dynamic.UpdateDelegates.UpdateAndExecute1[T0,TRet](CallSite site, T0 arg0)
   at CallSite.Target(Closure, CallSite, Object)
   at OrchardCore.Users.Handlers.ScriptExternalLoginEventHandler.UpdateUserInternal(UpdateUserContext context, LoginSettings loginSettings)
   at OrchardCore.Users.Handlers.ScriptExternalLoginEventHandler.UpdateUserAsync(UpdateUserContext context)
   at OrchardCore.Users.Controllers.AccountController.ExternalLoginSignInAsync(IUser user, ExternalLoginInfo info)

Orchard Core version

main

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