Support seamless integration with ruby/debug #2339

Job	Run time
ruby-versions / Generate Ruby versions	4s
vterm-yamatanooroti 2.7 (latest reline)	1m 15s
vterm-yamatanooroti 2.7	1m 16s
vterm-yamatanooroti 3.0 (latest reline)	43s
vterm-yamatanooroti 3.0	46s
vterm-yamatanooroti 3.1 (latest reline)	47s
vterm-yamatanooroti 3.1	59s
vterm-yamatanooroti 3.2 (latest reline)	44s
vterm-yamatanooroti 3.2	44s
vterm-yamatanooroti head (latest reline)	51s
vterm-yamatanooroti head	46s
rake test 2.7 (latest reline)	1m 5s
rake test 2.7	55s
rake test 3.0 (latest reline)	50s
rake test 3.0	52s
rake test 3.1 (latest reline)	50s
rake test 3.1	38s
rake test 3.2 (latest reline)	43s
rake test 3.2	46s
rake test head (latest reline)	42s
rake test head	48s
rake test truffleruby-head (latest reline)	6m 52s
rake test truffleruby-head	6m 16s
	30m 12s

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