fix(crypto-wallet-core): add input validation and error handling to p…

[amussara]

…roxy classes

• Add proper input validation to ValidationProxy, DeriverProxy, and TransactionsProxy
• Throw descriptive errors for unsupported chains instead of crashing on undefined
• Add getSupportedChains() and isSupported() methods to all proxy classes
• Add TypeScript type annotations to all proxy method parameters
• Improve ETH/XRP validation with explicit URI parameter validation
• Add try-catch to XRP address validation to handle malformed base58 inputs
• Add comprehensive test suite for proxy error handling and edge cases
• Validate address/URI inputs are non-empty strings before delegating

Description

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Changelog

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Testing Notes

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Checklist

• I have read CONTRIBUTING.md and verified that this PR follows the guidelines and requirements outlined in it.
• I have added the appropriate package tag(s) (e.g. BWC if modifying the bitcore-wallet-client package, CLI if modifying the bitcore-cli package, etc.)
• I have verified that this is not an existing PR (open or closed)