[spec-api]: XMLParser does not decode 
 by default #10350

// repro.mjs
// Demonstrates that fast-xml-parser does not decode 
 (numeric char ref for \n)
// by default, which causes Spector XML payload comparison to fail when the Go SDK
// encodes newlines in chardata fields as 
 (valid per XML spec, encoding/xml default).

import { XMLParser } from "fast-xml-parser";

// Go's encoding/xml serializes a chardata field containing "\n  text\n"
// as the following wire XML:
const wireXml = "<root>&#xA;  This is some text.&#xA;</root>";

// Expected value (what the TypeSpec spec / Go test expects):
const expected = "\n  This is some text.\n";

const defaultResult  = new XMLParser().parse(wireXml).root;
const fixedResult    = new XMLParser({ processEntities: true, htmlEntities: true, trimValues: false })
                         .parse(wireXml).root;

console.log("wire XML  :", wireXml);
console.log("expected  :", JSON.stringify(expected));
console.log("default   :", JSON.stringify(defaultResult),  defaultResult  === expected ? "✅" : "❌ MISMATCH");
console.log("with fix  :", JSON.stringify(fixedResult),    fixedResult    === expected ? "✅" : "❌ MISMATCH");