Dotty

Fix well-formed test for capabilities #36023

Job	Run time
test	1h 12m 34s
test_windows_fast	1h 3m 0s
MiMa	11m 22s
community_build_c	57m 5s
community_build_a	50m 15s
community_build_b	1h 10m 13s
test_sbt	15m 30s
test_java8	0s
test_windows_full	0s
build-msi-package	0s
build-sdk-package / build	9m 23s
test-msi-package	-1s
test_non_bootstrapped	-6s
test_scala2_library_tasty	-10s
build-chocolatey-package / build	24s
test-chocolatey-package	0s
publish_nightly	0s
publish_release	0s
nightly_documentation	0s
open_issue_on_failure	0s
	5h 49m 29s

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