[FSSDK-11095] rewrite condition_tree_evaluator tests in Typescript (#… #997

Job	Run time
crossbrowser_and_umd_unit_tests	6h 0m 13s
lint	58s
unit_tests (16)	1m 42s
unit_tests (18)	1m 44s
unit_tests (20)	1m 32s
unit_tests (22)	1m 30s
fullstack_production_suite / test	5s
lint_markdown_files / lint	1m 6s
integration_tests / test	8s
Coveralls coverage	3s
	6h 9m 1s

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