Support `Ractor#value` #465

Job	Run time
ruby-versions / Generate Ruby versions	3s
ubuntu-24.04 2.7	47s
ubuntu-24.04 3.0	20s
ubuntu-24.04 3.1	19s
ubuntu-24.04 3.2	22s
ubuntu-24.04 3.3	24s
ubuntu-24.04 3.4	12s
ubuntu-24.04 debug	28s
ubuntu-24.04 head	20s
ubuntu-24.04 jruby-head	1m 24s
ubuntu-24.04 truffleruby-head	51s
ubuntu-22.04 2.7	48s
ubuntu-22.04 3.0	19s
ubuntu-22.04 3.1	23s
ubuntu-22.04 3.2	24s
ubuntu-22.04 3.3	21s
ubuntu-22.04 3.4	19s
ubuntu-22.04 debug	28s
ubuntu-22.04 head	22s
ubuntu-22.04 jruby-head	1m 18s
ubuntu-22.04 truffleruby-head	37s
	10m 49s

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