Uses SubjectCreator where ValueProvider was inappropriate; fixes exce… #2198

Job	Run time
Supported JDK 8	31s
Supported JDK 11	28s
Supported JDK 17	44s
Supported JDK 21	1m 21s
Supported JDK 22	1m 14s
Experimental JDK EA (simplified)	53s
Experimental JDK EA (full)	1m 3s
	6m 14s

Provide feedback