Fix Scala3 compat spec #2264

Job	Run time
conformance	2m 8s
build (2_12, mima)	1m 34s
build (2_12, e2e)	3m 48s
build (2_12, test)	5m 17s
build (2_13, mima)	1m 47s
build (2_13, e2e)	3m 40s
build (2_13, test)	3m 2s
build (3, mima)	7s
build (3, e2e)	2m 37s
build (3, test)	2m 37s
build (2_12, examples_and_formatting)	3m 32s
build (2_13, scala3_compat_test)	3m 33s
build (3, scala3_compat_test)	2m 59s
ci-passed	0s
	36m 41s

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