[FSSDK-12115] Notification center type definition update (#1119) #1454

Job	Run time
lint	1m 7s
crossbrowser_and_umd_unit_tests	2m 24s
unit_tests (16)	2m 16s
unit_tests (14)	2m 15s
unit_tests (18)	2m 9s
unit_tests (20)	2m 2s
lint_markdown_files / lint	59s
integration_tests / test	7s
fullstack_production_suite / test	5s
Coveralls coverage	3s
	13m 27s

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