Dotty

improvement: Update mtags to 1.4.1 and backport remaining changes #32984

Job	Run time
test	54m 33s
MiMa	10m 48s
test_scala2_library_tasty	0s
test_non_bootstrapped	0s
test_windows_fast	18m 2s
community_build_a	49m 10s
community_build_b	1h 28m 10s
community_build_c	1h 1m 28s
test_sbt	18m 48s
test_windows_full	0s
build-msi-package	0s
test_java8	0s
build-sdk-package / build	8m 7s
test-msi-package	0s
build-chocolatey-package / build	26s
test-chocolatey-package	0s
publish_nightly	0s
publish_release	0s
nightly_documentation	0s
open_issue_on_failure	0s
	5h 9m 32s

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