test(demo): intentional FAIL for list-scenarios exclude check (#165)

Demo-only: TestRun_ExcludeDropsMatchedNames expects live_heap in the
included set. Revert this commit (or restore the want line) to demo PASS.

Author: vlad-scherbich

cmd/list-scenarios/main_test.go

@@ -137,7 +137,7 @@ func TestRun_ExcludeDropsMatchedNames(t *testing.T) {
 		names = append(names, e.Names)
 	}
 	joined := strings.Join(names, ", ")
-	want := "python_cpu, python_lock_3.14, python_mem_domain_3.14"
+	want := "python_cpu, python_lock_3.14, python_mem_domain_3.14, python_live_heap_3.14"  // DEMO_FAIL: drop live_heap suffix to demo PASS
 	if joined != want {
 		t.Fatalf("excluded set wrong:\n got %q\nwant %q", joined, want)
 	}