Add convertToDraft for pull requests #4830

Job	Run time
site (Java 17)	24m 14s
build-only (Java 17)	50s
build-and-test Bridged (Java 17)	7m 20s
test Java 11 (no-build)	1m 2s
test (windows, Java 21)	6m 21s
test (ubuntu, Java 21)	7m 21s
test (windows, Java 17)	6m 12s
test (ubuntu, Java 17)	7m 16s
codecov-upload (Upload to codecov.io)	-1s
	1h 0m 35s

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