[FSSDK-12115] Notification center type definition update #1446

Job	Run time
lint	1m 4s
crossbrowser_and_umd_unit_tests	2m 18s
unit_tests (16)	2m 13s
unit_tests (18)	2m 4s
unit_tests (20)	2m 3s
unit_tests (14)	2m 20s
fullstack_production_suite / test	7s
lint_markdown_files / lint	1m 2s
integration_tests / test	8s
Coveralls coverage	5s
	13m 24s

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