checker: use CheckerSchedulerType for checker #20887

Job	Run time
chunks (1, Unit Test(1))	3m 26s
chunks (2, Unit Test(2))	2m 36s
chunks (3, Unit Test(3))	3m 51s
chunks (4, Tests(1))	3m 34s
chunks (5, Tests(2))	3m 19s
chunks (6, Tools Test)	4m 7s
chunks (7, Client Integration Test)	3m 54s
chunks (8, TSO Integration Test)	3m 22s
chunks (9, MicroService Integration(!TSO))	2m 28s
chunks (10, MicroService Integration(TSO))	3m 57s
report-coverage	0s
	34m 34s

Provide feedback