Fallback to non-colored inspect when coloring takes too long #2770

Job	Run time
ruby-versions / Generate Ruby versions	2s
vterm-yamatanooroti 2.7 (latest reline)	1m 40s
rake test 2.7 (latest reline)	51s
vterm-yamatanooroti 2.7	1m 8s
rake test 2.7	52s
vterm-yamatanooroti 3.0 (latest reline)	51s
rake test 3.0 (latest reline)	42s
vterm-yamatanooroti 3.0	49s
rake test 3.0	44s
vterm-yamatanooroti 3.1 (latest reline)	52s
rake test 3.1 (latest reline)	42s
vterm-yamatanooroti 3.1	48s
rake test 3.1	47s
vterm-yamatanooroti 3.2 (latest reline)	51s
rake test 3.2 (latest reline)	39s
vterm-yamatanooroti 3.2	47s
rake test 3.2	48s
vterm-yamatanooroti head (latest reline)	44s
vterm-yamatanooroti head	44s
rake test head (latest reline)	1m 6s
rake test head	40s
rake test truffleruby-head (latest reline)	4m 37s
rake test truffleruby-head	4m 35s
	26m 19s

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