Add `Optional<JsonNode> JsonNode.asOptional()` convenience method for… #4465

Job	Run time
build (8, ubuntu-22.04)	1m 48s
build (11, ubuntu-22.04)	53s
build (17, ubuntu-22.04)	52s
build (21, ubuntu-22.04)	57s
build (23, ubuntu-22.04)	54s
build (8, windows-latest, W)	1m 35s
Trigger v3 dep builds	0s
Trigger v2 dep builds / Trigger downstream builds (FasterXML/jackson-modules-base)	13s
Trigger v2 dep builds / Trigger downstream builds (FasterXML/jackson-modules-java8)	12s
Trigger v2 dep builds / Trigger downstream builds (FasterXML/jackson-dataformats-binary)	11s
Trigger v2 dep builds / Trigger downstream builds (FasterXML/jackson-dataformats-text)	12s
Trigger v2 dep builds / Trigger downstream builds (FasterXML/jackson-dataformat-xml)	11s
Trigger v2 dep builds / Trigger downstream builds (FasterXML/jackson-datatypes-collections)	11s
Trigger v2 dep builds / Trigger downstream builds (FasterXML/jackson-datatypes-misc)	14s
Trigger v2 dep builds / Trigger downstream builds (FasterXML/jackson-datatype-joda)	12s
Trigger v2 dep builds / Trigger downstream builds (FasterXML/jackson-module-kotlin)	12s
Trigger v2 dep builds / Trigger downstream builds (FasterXML/jackson-module-scala)	11s
Trigger v2 dep builds / Trigger downstream builds (FasterXML/jackson-jaxrs-providers)	11s
Trigger v2 dep builds / Trigger downstream builds (FasterXML/jackson-jakarta-rs-providers)	11s
Trigger v2 dep builds / Trigger downstream builds (FasterXML/jackson-integration-tests)	11s
	9m 31s

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