`QName` (de)serialization ignores prefix

[jpraet]

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Describe the bug

QName (de)serialization ignores prefix, because it uses QName#toString() and QName#valueOf(java.lang.String).

Version Information

2.17.2

Reproduction

        QName qname = new QName("http://test.com", "test", "p");
        System.out.println(qname.getPrefix()); // <- p
        ObjectMapper mapper = new ObjectMapper();
        String ser = mapper.writeValueAsString(writer, qname);
        System.out.println(ser); // <- "{http://test.com}test"
        QName result = mapper.readValue(ser, QName.class);
        System.out.println(result.getPrefix()); // <- empty string

Expected behavior

QName prefix is preserved.

Additional context

No response

[cowtowncoder]

Thank you for reporting this @jpraet.

I can see the problem, but it'll probably be difficult to resolve in a backwards-compatible way.

PRs welcome.