fix(DEV-14053): vat id error message from api

[costa-monite]

• Added a new optional defaultMessage parameter
• Changed the fallback message to use the provided defaultMessage if available, otherwise falls back to Unknown
• The function now returns the custom default message instead of just "Unknown" when no specific error message is found
• Updated the error handling in useCreateCounterpartVat hook
• Instead of showing a generic "Failed to create VAT" message, it now uses getAPIErrorMessage
• Passes the error object and the default message Failed to create VAT to get a more specific error message when available

[changeset-bot]

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Latest commit: 2604834

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