[GR-60196] Adjust jump table threshold #20434

Job	Run time
/substratevm on Windows	7m 56s
/compiler style,fullbuild,test JDK21	32m 32s
/compiler build,bootstraplite JDKlatest	5m 3s
/espresso style,fullbuild JDK21	14m 43s
/substratevm style,fullbuild JDK21	11m 35s
/substratevm build,helloworld,native_unittests JDKlatest	20m 40s
/substratevm build,debuginfotest JDKlatest	22m 48s
/substratevm hellomodule JDKlatest	5m 7s
/sulong style,fullbuild,sulongBasic JDK21	20m 42s
/truffle JDK21	34m 10s
/vm build,sulong JDKlatest	26m 57s
/vm build JDKlatest	15m 59s
	3h 38m 12s

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