[Flaky test] contrib/google.golang.org/grpc: TestStreamSendsErrorCode

[katiehockman]

Recent failure: https://github.com/DataDog/dd-trace-go/actions/runs/7700474308/job/20984470286

=== FAIL: contrib/google.golang.org/grpc TestStreamSendsErrorCode (0.00s)
2024/01/29 18:07:28 Datadog Tracer v1.60.0 WARN: No global service name was detected. GRPC Server may have been created before calling tracer.Start(). Will dynamically fetch service name for every span. Note this may have a slight performance cost, it is always recommended to start the tracer before initializing any traced packages.
2024/01/29 18:07:28 Datadog Tracer v1.60.0 WARN: No global service name was detected. GRPC Server may have been created before calling tracer.Start(). Will dynamically fetch service name for every span. Note this may have a slight performance cost, it is always recommended to start the tracer before initializing any traced packages.
    grpc_test.go:536: 
        	Error Trace:	/__w/dd-trace-go/dd-trace-go/contrib/google.golang.org/grpc/grpc_test.go:536
        	Error:      	Not equal: 
        	            	expected: "OK"
        	            	actual  : "InvalidArgument"
        	            	
        	            	Diff:
        	            	--- Expected
        	            	+++ Actual
        	            	@@ -1 +1 @@
        	            	-OK
        	            	+InvalidArgument
        	Test:       	TestStreamSendsErrorCode
        	Messages:   	last span should contain error code