[format] Fix ORC zstd compression option inconsistent across writers

[ArnavBalyan]

Purpose

• Multiple ORC writers on same JVM share the options. When writers use different compression settings, one writer overwrites the settings used by another.
• Paimon applies each writer’s compression level and window size directly to the shared defaults, making the resulting compression depend on writer creation order.
• Ensure each writer gets it's own copy

Tests

• UT