Ruby

Improve ensure clause handling #1116

Job	Run time
ruby-versions / Generate Ruby versions	2s
build (3.2)	42s
build (3.3)	42s
build (3.4)	39s
build (head)	43s
build (truffleruby)	31s
build (truffleruby-head)	36s
	3m 55s

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