[CALCITE-6569] RelToSqlConverter missing IGNORE NULLS for window func… #204

Job	Run time
CheckerFramework (JDK 11)	11m 39s
Linux (JDK 11), Avatica main	16m 20s
CheckerFramework (JDK 11), oldest Guava	10m 56s
Error Prone (JDK 11), latest Guava	7m 17s
Druid Tests	7m 15s
Linux (JDK 11), Pacific/Chatham Timezone	11m 33s
Linux (JDK 21)	10m 57s
Linux (JDK 17)	11m 10s
Linux (JDK 22)	11m 15s
Linux (JDK 8), latest Guava, America/New_York Timezone	12m 53s
Linux (JDK 8), oldest Guava, America/New_York Timezone	11m 57s
Linux (JDK 8) Slow Tests	0s
macOS (JDK 21)	45m 9s
Windows (JDK 17)	17m 23s
Windows (JDK 21)	17m 45s
Windows (JDK 8)	16m 12s
	3h 39m 41s

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