Switch to StdioInputMethod when TERM is 'dumb' #3618

Job	Run time
lint	8s
Debug compatibility test	5m 46s
ruby-versions / Generate Ruby versions	3s
vterm-yamatanooroti 2.7 (latest reline)	1m 5s
rake test 2.7 (latest reline)	1m 18s
vterm-yamatanooroti 2.7	1m 14s
rake test 2.7	1m 20s
vterm-yamatanooroti 3.0 (latest reline)	54s
rake test 3.0 (latest reline)	1m 21s
vterm-yamatanooroti 3.0	53s
rake test 3.0	1m 19s
vterm-yamatanooroti 3.1 (latest reline)	52s
rake test 3.1 (latest reline)	1m 19s
vterm-yamatanooroti 3.1	51s
rake test 3.1	1m 14s
vterm-yamatanooroti 3.2 (latest reline)	56s
rake test 3.2 (latest reline)	1m 15s
vterm-yamatanooroti 3.2	57s
rake test 3.2	1m 11s
vterm-yamatanooroti 3.3 (latest reline)	1m 4s
rake test 3.3 (latest reline)	1m 23s
vterm-yamatanooroti 3.3	59s
rake test 3.3	1m 18s
vterm-yamatanooroti head (latest reline)	1m 9s
rake test head (latest reline)	1m 24s
vterm-yamatanooroti head	1m 4s
rake test head	1m 36s
rake test truffleruby-head (latest reline)	2m 43s
rake test truffleruby-head	2m 47s
	39m 23s

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