Should close connection on invalid WS frame

[varnerac]

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Environment

• VerneMQ Version: main
• OS: any
• Erlang/OTP version (if building from source): latest
• VerneMQ configuration (vernemq.conf) or the changes from the default
• Cluster size/standalone:

Expected behaviour

• Receiving any Websocket frame other than binary should close the connection

From the MQTT 5 spec:

MQTT Control Packets MUST be sent in WebSocket binary data frames. If any other type of data frame is received the recipient MUST close the Network Connection [MQTT-6.0.0-1].

Actual behaviour

• Other frames are silently ignored