Dotty

Fix #21914: Don't project nested wildcard patterns to nullable #33174

Job	Run time
test	56m 18s
test_scala2_library_tasty	0s
community_build_a	57m 10s
community_build_b	1h 22m 13s
test_non_bootstrapped	0s
test_windows_fast	35m 33s
community_build_c	1h 0m 4s
MiMa	10m 37s
test_sbt	17m 46s
test_windows_full	0s
test_java8	0s
build-msi-package	0s
build-sdk-package / build	8m 2s
test-msi-package	0s
build-chocolatey-package / build	23s
test-chocolatey-package	0s
publish_nightly	0s
publish_release	0s
nightly_documentation	0s
open_issue_on_failure	0s
	5h 28m 6s

Provide feedback