Dotty

Three fixes to SAM type handling #32472

Job	Run time
test	8m 34s
test_windows_fast	3m 57s
test_non_bootstrapped	0s
test_scala2_library_tasty	0s
community_build_b	44m 41s
community_build_a	50m 41s
community_build_c	45m 10s
MiMa	4m 58s
test_windows_full	0s
test_sbt	4m 53s
build-msi-package	0s
test_java8	0s
build-sdk-package / build	7m 44s
build-chocolatey-package / build	20s
test-chocolatey-package	0s
publish_nightly	0s
publish_release	0s
nightly_documentation	0s
open_issue_on_failure	0s
	2h 50m 58s

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