Support some form of custom escaping of XML values written using Stax (Woodstox/Aalto) functionality

Currently `CharacterEscapes` system does not work for XML module, mostly because module has no direct control over output escaping. However, Stax2 extension that Woodstox (and Aalto I think?) implements does have similar functionality, using properties:
- P_TEXT_ESCAPER (for cdata)
- P_ATTR_VALUE_ESCAPER (for attribute values)

so it would be great to use that functionality to support needs for customized escapes, if at all possible. It is hard to say for sure whether that would work, but it should be easy enough to check.

**EDIT**: (30-Mar-2025)

It looks like the impedance b/w Jackson `CharacterEscapes` and Stax2 `EscapingWriterFactory` is too high to combine these 2 constructs, unfortunately.