Catch2 Test Fixes (#2961)

* test fixes

* address PR comment

* PR comment fixing Nvidia pass

* add additional kernel launch checks

* pr comments

catch/unit/deviceLib/AtomicAdd_Coherent_withoutflag.cc

@@ -72,6 +72,7 @@ TEMPLATE_TEST_CASE("Unit_AtomicAdd_Coherentwithoutflag", "",
       hipLaunchKernelGGL(AtomicCheck<TestType>, dim3(1), dim3(1),
                          0, 0, A_d,
                          result_d);
+      HIP_CHECK(hipGetLastError()); 
       HIP_CHECK(hipDeviceSynchronize());
       bool testResult;
       testResult = HipTest::assemblyFile_Verification<TestType>(