Use match statement in get_error_message

[adamtheturtle]

Summary

• Replace if isinstance(exc, ...) chains with a match exc: statement in get_error_message for cleaner structural pattern matching.
• The case _ fallback preserves the existing KeyError behavior for unknown exception types.
• No behavior change — all return values are identical.

Closes #2133

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Note

Low Risk
Mostly a refactor of CLI error-message selection plus dev dependency lockfile bumps; runtime behavior should be unchanged aside from any Python version compatibility expectations for match.

Overview
Refactors get_error_message in src/vws_cli/_error_handling.py from an isinstance chain to a match/case statement while preserving the same message outputs and the existing fallback behavior for unhandled exception types.

Updates uv.lock to bump dev tooling dependencies (pyrefly to 0.61.0, ty to 0.0.30).

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