[GC] Fix option type in IOPrioritySizePolicy #214

Job	Run time
Prerequisites / Prerequisites	47s
Prerequisites / Check Commit Message	0s
linux-aarch64 / build (debug)	9m 35s
riscv64 / build (release)	9m 43s
linux-aarch64 / build (release)	9m 35s
linux-x64 / build (debug)	9m 42s
windows-x64 / build (debug)	9m 34s
linux-x64 / build (release)	9m 41s
windows-x64 / build (release)	9m 36s
linux-aarch64	1s
windows-x64	1s
linux-x64	1s
Remove bundle artifacts	1s
	1h 8m 17s

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