Support for `StreamReadConstraints.maxDocumentLength`

[pjfanning]

https://github.com/FasterXML/jackson-core/blob/2.16/src/main/java/com/fasterxml/jackson/core/StreamReadConstraints.java

First: some limits do work

• maxTokenCount

is enforced by XML parser itself, and

• maxNumberLength
• maxStringLength
• maxNestingDepth

are enforced by core ParserMinimalBase.

This leaves:

• maxDocumentLength

Woodstox has its own way to enforce limits and users who need to enforce that should use jackson-dataformat-xml with woodstox as the XML Stream Reader. See https://cowtowncoder.medium.com/configuring-woodstox-xml-parser-woodstox-specific-properties-1ce5030a5173 and the part about P_MAX_ELEMENT_DEPTH.

maxDocumentLength could be enforced similarly - see P_MAX_CHARACTERS