Dotty

Fix extending protected nested java classes #33054

Job	Run time
test	55m 10s
test_non_bootstrapped	0s
build-msi-package	0s
community_build_a	53m 10s
community_build_b	1h 26m 43s
community_build_c	1h 6m 18s
MiMa	10m 52s
test_java8	0s
test_sbt	18m 26s
test_scala2_library_tasty	0s
test_windows_fast	45m 55s
test_windows_full	0s
build-sdk-package / build	7m 58s
test-msi-package	0s
build-chocolatey-package / build	20s
test-chocolatey-package	0s
publish_nightly	0s
publish_release	0s
nightly_documentation	0s
open_issue_on_failure	0s
	5h 44m 52s

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