perf: optimize SearchUtils operator dispatch with dictionary lookup

[mustafahasankhan]

Summary

Optimizes the SearchUtils._apply_operator_condition method by introducing dictionary-based dispatch for frequently used operators, reducing lookup time from O(n) to O(1) for common operations while maintaining 100% backwards compatibility.

Changes

• Added OPERATOR_MAP class constant with lambda functions for known PyAtlan operators
• Replaced if-elif chain with dictionary lookup for common operators (eq, startswith, lt, lte, gt, gte, match, has_any_value)
• Preserved original fallback mechanism for operators not in the map (ensures neq, contains, and any runtime-available operators continue to work)

Performance Impact

• Before: O(n) operator lookup through if-elif chain (up to 11 comparisons)
• After: O(1) dictionary lookup for common operators, fallback for others

Backwards Compatibility

✅ 100% backwards compatible - all changes are internal optimizations:

Testing

• Tested with operators: eq, neq, contains, startswith, between, gt, lt
• Verified fallback mechanism works for operators not in map