macos

Add a comment to explicit RUBY_FL_USER2 | RUBY_FL_USER3 (#133) #463

Job	Run time
ruby-versions / Generate Ruby versions	3s
macos-13 2.7	53s
macos-13 3.0	19s
macos-13 3.1	18s
macos-13 3.2	35s
macos-13 3.3	17s
macos-13 3.4	27s
macos-13 debug	34s
macos-13 head	32s
macos-14 2.7	45s
macos-14 3.0	21s
macos-14 3.1	12s
macos-14 3.2	15s
macos-14 3.3	15s
macos-14 3.4	19s
macos-14 debug	17s
macos-14 head	14s
	6m 36s

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