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Support Rails 8.1 #8370

Job	Run time
benchmark	9s
test (Rails 7.2, Ruby 3.3)	32s
test (Rails 7.1, Ruby 3.2)	37s
test (Rails 8.1, Ruby 3.4)	34s
test (Rails main, Ruby head)	12s
Test compatibility with Primer ViewComponents (main)	18m 32s
test (Rails 8.0, Ruby 3.4)	44s
coverage	0s
	21m 20s