ActionCable: don't use send action #1958

Job	Run time
lint	1m 5s
javascript_test	1m 25s
postgres_test	2m 8s
mongodb_test (gemfiles/mongoid_6.gemfile)	1m 32s
system_tests	1m 42s
mongodb_test (gemfiles/mongoid_7.gemfile)	1m 24s
test (Gemfile, 3.2)	1m 4s
test (gemfiles/rails_7.0.gemfile, 3.1)	1m 18s
test (gemfiles/rails_master.gemfile, 3.1)	1m 51s
test (gemfiles/rails_7.0.gemfile, 3.2)	1m 17s
test (gemfiles/rails_7.1.gemfile, 3.3)	1m 36s
test (gemfiles/rails_master.gemfile, 3.3)	1m 48s
	18m 10s

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