优化ptz的websocket推送

‘liusuyi’

2023-06-24 388aba5a9bf187edada44787a9268401d01b7a59

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Phil Booth <pmbooth@gmail.com> (https://philbooth.me/)
Andrew Lawson (https://github.com/adlawson)
Tim O'Sulg (https://github.com/timgluz)