Don't allow restarting to apply custom flags when supervised user creation flow is active

chrome/browser/chromeos/login/user_flow.cc

Index: chrome/browser/chromeos/login/user_flow.cc
diff --git a/chrome/browser/chromeos/login/user_flow.cc b/chrome/browser/chromeos/login/user_flow.cc
index fcfc9ca9e07090d924c98b6477005462dc17e3b7..ffec4623486562cf32ff53a1deb51748e09a8c78 100644
--- a/chrome/browser/chromeos/login/user_flow.cc
+++ b/chrome/browser/chromeos/login/user_flow.cc
@@ -40,6 +40,10 @@ bool DefaultUserFlow::ShouldSkipPostLoginScreens() {
   return false;
 }
 
+bool DefaultUserFlow::SupportsEarlyRestartToApplyFlags() {
+  return true;
+}
+
 bool DefaultUserFlow::HandleLoginFailure(const AuthFailure& failure) {
   return false;
 }