Allow doctrine/annotations 2.x

[smarley]

Summary

• Allow doctrine/annotations 2.x while keeping 1.14 compatibility.
• This lets consumers resolve doctrine/lexer 3.x through doctrine/annotations 2.x.
• Suppress Psalm's DeprecatedClass warning for Spiral's NamedArgumentConstructor marker, which is still required for named PHP attribute arguments at runtime.

Verification

• composer validate --strict --no-check-lock
• Composer/runtime smoke: doctrine/annotations 2.0.2 + doctrine/lexer 3.0.1
• Composer/runtime smoke: doctrine/annotations 1.14.4 + doctrine/lexer 2.1.1
• Composer/runtime smoke: doctrine/annotations 1.14.4 + doctrine/lexer 1.2.3
• composer lint
• composer analyze