[Backport 1.20]Listener: fix a crash when updating any listener that does not bind t…#18505

mathetake merged 1 commit intoenvoyproxy:release/v1.20envoyproxy/envoy:release/v1.20from

lambdai:bp_listenercrash1.20_1lambdai/envoy-dai:bp_listenercrash1.20_1Copy head branch name to clipboard