[CALCITE-6663] Support SPLIT_PART function for PostgreSql #14

Job	Run time
Windows (JDK 17)	15m 12s
Windows (JDK 8)	16m 28s
Linux (JDK 11, Pacific/Chatham Timezone)	10m 25s
Linux (JDK 11, Avatica main)	12m 39s
Linux (JDK 21)	10m 47s
Linux (JDK 17)	10m 27s
Linux (JDK 23)	10m 6s
Linux (JDK 8, latest Guava, America/New_York Timezone)	11m 56s
Linux (JDK 8, oldest Guava, America/New_York Timezone)	11m 1s
Windows (JDK 21)	14m 59s
ErrorProne (JDK 11, latest Guava)	4m 14s
CheckerFramework (JDK 11)	10m 46s
CheckerFramework (JDK 11, oldest Guava)	10m 48s
Druid Tests	6m 57s
Linux (JDK 8) Slow Tests	0s
macOS (JDK 21)	40m 37s
	3h 17m 22s

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