Dotty

Add context parameters to SemanticDB synthetics #37109

Job	Run time
test	54m 58s
test_windows_fast	31m 38s
test_sbt	18m 55s
community_build_b	1h 12m 2s
community_build_a	54m 17s
MiMa	1m 59s
test_non_bootstrapped	0s
community_build_c	1h 0m 51s
build-sdk-package / build	9m 52s
test_windows_full	0s
test_java8	0s
build-msi-package	0s
test-msi-package	0s
build-chocolatey-package / build	25s
test-chocolatey-package	0s
publish_release	-1s
	5h 4m 56s

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