chore: Cherry pick RBAC errors and bump version to 1.26.1 #2466

Job	Run time
e2e (logs)	9m 47s
e2e (metrics && set_a)	13m 2s
e2e-dev (logs)	5m 20s
e2e-istio	9m 41s
e2e (metrics && set_b)	8m 15s
e2e-dev (metrics)	5m 40s
e2e (traces)	9m 37s
e2e-dev (traces)	5m 13s
e2e (telemetry)	8m 7s
e2e-self-mon (logs, healthy)	6m 55s
e2e (max-pipeline)	5m 25s
e2e-self-mon (logs, backpressure)	8m 54s
e2e (telemetry-log-analysis)	12m 34s
e2e-self-mon (logs, outage)	10m 24s
e2e-self-mon (metrics, healthy)	7m 0s
e2e-self-mon (metrics, backpressure)	11m 23s
e2e-self-mon (metrics, outage)	10m 53s
e2e-self-mon (traces, healthy)	6m 54s
e2e-self-mon (traces, backpressure)	8m 22s
e2e-self-mon (traces, outage)	11m 23s
	2h 54m 49s

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