fix: relax AttributeDef.default_value and index_type_es_fields to Any

[cmgrote]

Summary

• default_value: widened from str | None | UNSET to Any | None | UNSET
• index_type_es_fields: widened from Dict[str, Dict[str, str]] | None | UNSET to Dict[str, Dict[str, Any]] | None | UNSET

Why

The live Atlas API returns non-string scalars for both fields:

• default_value can be a native JSON boolean (false) or integer (0) where str was previously declared
• index_type_es_fields inner values can be integers (e.g. {"ignore_above": 256}) where str was previously declared

msgspec with strict=False does not coerce int/bool → str, so any consumer decoding a live Atlas typedef response would hit a ValidationError. The only workaround was a deep JSON traversal before decoding — widening to Any eliminates that entirely.

Test plan

• Existing typedef decode tests pass
• Decoding a live Atlas typedef response with default_value: false / index_type_es_fields: {"ignore_above": 256} no longer raises ValidationError

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Note

Low Risk
Low risk: only broadens type annotations for typedef decoding to accept non-string JSON scalars/values; behavior is otherwise unchanged aside from allowing more payloads to deserialize without errors.

Overview
Relaxes AttributeDef decoding in pyatlan_v9/model/typedef.py to match live Atlas API payloads.

default_value is widened from str to Any, and index_type_es_fields is widened so inner field values can be Any (not just str), preventing msgspec ValidationErrors when the API returns booleans/integers (for example false or {"ignore_above": 256}).

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