Address issues parsing XSD for ORE#12

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mcraveiro wants to merge 18 commits intocraflin:masterfrom

mcraveiro:fix-abstract-element-refs

Commits on Jan 25, 2026

Commits on Jan 27, 2026

Add support for group refs, substitution groups, and fix unbounded in choice

mcraveiro
and
claude
committed

Commits on Feb 11, 2026

Fix abstract element refs (substitution groups) being silently dropped

mcraveiro
and
claude
committed

Commits on Feb 27, 2026

Fix xs:any for complex types, add CDATA support, and fix choice group minOccurs

mcraveiro
and
claude
committed