[v14.x backport] http2: fix memory leak when nghttp2 hd threshold is reached
Backport https://github.com/nodejs/node/pull/41502 to v14 Address https://github.com/nodejs/node/issues/45295
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Backport https://github.com/nodejs/node/pull/41502 to v14 Address https://github.com/nodejs/node/issues/45295