Support seamless integration with ruby/debug #2224

Job	Run time
ruby-versions / Generate Ruby versions	3s
vterm-yamatanooroti 2.7 (latest reline)	1m 13s
vterm-yamatanooroti 2.7	1m 12s
vterm-yamatanooroti 3.0 (latest reline)	38s
vterm-yamatanooroti 3.0	33s
vterm-yamatanooroti 3.1 (latest reline)	1m 6s
vterm-yamatanooroti 3.1	56s
vterm-yamatanooroti 3.2 (latest reline)	47s
vterm-yamatanooroti 3.2	45s
vterm-yamatanooroti head (latest reline)	46s
vterm-yamatanooroti head	36s
rake test 2.7 (latest reline)	1m 2s
rake test 2.7	54s
rake test 3.0 (latest reline)	42s
rake test 3.0	38s
rake test 3.1 (latest reline)	36s
rake test 3.1	51s
rake test 3.2 (latest reline)	44s
rake test 3.2	34s
rake test head (latest reline)	35s
rake test head	34s
rake test truffleruby-head (latest reline)	6m 59s
rake test truffleruby-head	5m 57s
	28m 41s

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