Dotty

replace deprecated AnyRefMap (#22230) #33674

Job	Run time
test_non_bootstrapped	27m 51s
test	53m 59s
MiMa	11m 33s
test_scala2_library_tasty	0s
test_windows_fast	0s
test_windows_full	44m 35s
community_build_b	1h 20m 39s
community_build_a	54m 8s
community_build_c	1h 3m 46s
test_java8	0s
build-msi-package	0s
test_sbt	20m 21s
build-sdk-package / build	7m 37s
test-msi-package	0s
build-chocolatey-package / build	18s
test-chocolatey-package	0s
publish_nightly	0s
publish_release	0s
nightly_documentation	0s
open_issue_on_failure	0s
	6h 4m 47s

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