refactor: Import `WebSocketServer` properly (#3290) #11040

Job	Run time
build	56s
node-docker-image / build	5m 32s
lint	1m 27s
geoip-location / test	56s
test-utils / test	28s
utils / test	1m 8s
node-e2e / test	3m 0s
node / test	39s
sdk-browser / test	2m 3s
sdk-browser-e2e / test	4m 0s
cdn-location / test	35s
dht-browser / test	4m 5s
autocertifier-server / test	32s
trackerless-network-browser / test	3m 22s
trackerless-network / test	2m 9s
cli-tools / test	2m 50s
sdk / test	1m 13s
dht / test	2m 9s
proto-rpc / test	1m 1s
sdk-e2e / test	3m 3s
	41m 8s

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