Make SparkR able to stop properly when the connection is timed-out

./bin/sparkR --conf spark.r.backendConnectionTimeout=10

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SparkSession Web UI available at http://192.168.35.219:4040
SparkSession available as 'spark'(master = local[*], app id = local-1674649482367).
> 23/01/25 21:24:53 WARN RBackendHandler: Ignoring read timeout in RBackendHandler
spark.session()
Error in spark.session() : could not find function "spark.session"
> spark.session.stop()
Error in spark.session.stop() :
  could not find function "spark.session.stop"