Detect listener pod drift by comparing the pod, not a hash (#4635)

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

controllers/actions.github.com/helpers_bench_test.go

@@ -0,0 +1,19 @@
+package actionsgithubcom
+
+import (
+	"testing"
+)
+
+// BenchmarkListenerPodSpecRequiresRecreation measures the listener pod drift
+// check, which also runs on every AutoscalingListener reconcile.
+func BenchmarkListenerPodSpecRequiresRecreation(b *testing.B) {
+	desired := desiredListenerPod()
+	live := livePodFromDesired(desired)
+	b.ReportAllocs()
+	b.ResetTimer()
+	for range b.N {
+		if listenerPodSpecRequiresRecreation(live, desired) {
+			b.Fatal("expected no recreation")
+		}
+	}
+}