experiment: do not bring forward symbols created in transform and backend phases #32999

Job	Run time
test	55m 30s
test_non_bootstrapped	0s
test_scala2_library_tasty	0s
test_windows_fast	46m 35s
MiMa	11m 1s
community_build_a	52m 16s
test_windows_full	0s
community_build_b	1h 23m 20s
community_build_c	1h 5m 24s
build-msi-package	0s
test_java8	0s
test_sbt	18m 39s
build-sdk-package / build	7m 42s
test-msi-package	0s
build-chocolatey-package / build	18s
test-chocolatey-package	0s
publish_release	0s
publish_nightly	0s
nightly_documentation	0s
open_issue_on_failure	0s
	5h 40m 45s

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