Skip a UMP test that doesn't work on iOS simulator. (#1472)

* Don't run a UMP test that doesn't work on iOS simulator.

* Format.

Author: jonsimantov

gma/integration_test/src/integration_test.cc

@@ -3023,6 +3023,8 @@ TEST_F(FirebaseGmaUmpTest, TestUmpCallbacksOnWrongInstance) {
 
 TEST_F(FirebaseGmaUmpTest, TestUmpMethodsReturnOperationInProgress) {
   SKIP_TEST_ON_DESKTOP;
+  SKIP_TEST_ON_IOS_SIMULATOR;  // LoadAndShowConsentFormIfRequired
+                               // is too quick on simulator.
 
   using firebase::gma::ump::ConsentFormStatus;
   using firebase::gma::ump::ConsentRequestParameters;