Report cvd stack traces failing main only to the log file

[Databean]

Bug: b/507554710

[Databean]

This was failing create_with_gce_metadata_credentials_test because the test validates that there is specific content in the error message:

android-cuttlefish/e2etests/orchestration/create_with_gce_metadata_credentials_test/main_test.go

Lines 63 to 69 in cb42773

	_, err := srv.CreateCVD(req, &hoclient.AccessTokenBuildAPICreds{})
	log.Printf("error: %s\n", err)
	const expected = "Could not resolve host: metadata.google.internal"
	if !strings.Contains(fmt.Sprintf("%s", err), expected) {
	t.Fatalf("%q part not found in error message", expected)
	}

I've additionally restricted the logic to the scenario where stderr is an interactive terminal to hopefully preserve host orchestrator interactions with cvd.

FYI @ser-io