Catch2 Test Fixes (#2961)

* test fixes

* address PR comment

* PR comment fixing Nvidia pass

* add additional kernel launch checks

* pr comments

catch/unit/stream/hipStreamACb_MultiThread.cc

@@ -131,7 +131,7 @@ TEST_CASE("Unit_hipStreamAddCallback_MultipleThreads") {
   hipLaunchKernelGGL((device_function), dim3(blocks),
                      dim3(threadsPerBlock), 0,
                      mystream, C_d, A_d, N);
-
+  HIP_CHECK(hipGetLastError());
   HIP_CHECK(
   hipMemcpyAsync(C1_h, C_d, Nbytes,
                  hipMemcpyDeviceToHost, mystream));