[CALCITE-6569] RelToSqlConverter missing IGNORE NULLS for window func… #13556

Job	Run time
Linux (JDK 8), oldest Guava, America/New_York Timezone	0s
Windows (JDK 17)	0s
Windows (JDK 21)	0s
Windows (JDK 8)	0s
Linux (JDK 11), Pacific/Chatham Timezone	0s
Linux (JDK 8), latest Guava, America/New_York Timezone	0s
Linux (JDK 21)	0s
Linux (JDK 17)	0s
Error Prone (JDK 11), latest Guava	0s
Linux (JDK 11), Avatica main	0s
CheckerFramework (JDK 11)	12m 52s
CheckerFramework (JDK 11), oldest Guava	12m 57s
Linux (JDK 22)	0s
macOS (JDK 21)	0s
Druid Tests	0s
Linux (JDK 8) Slow Tests	0s
	25m 49s

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