Dotty

use new infer expected type for singleton complations #32177

Job	Run time
test	51m 49s
test_non_bootstrapped	0s
test_windows_fast	28m 3s
MiMa	12m 58s
test_scala2_library_tasty	0s
test_windows_full	0s
community_build_b	1h 2m 51s
community_build_a	1h 0m 12s
community_build_c	1h 0m 8s
test_java8	0s
test_sbt	17m 48s
build-msi-package	0s
build-sdk-package / build	8m 0s
build-chocolatey-package / build	24s
test-chocolatey-package	0s
publish_nightly	0s
publish_release	0s
nightly_documentation	0s
open_issue_on_failure	0s
	5h 2m 13s

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