Add comprehensive integration tests for Bridge quote fetching system

[devin-ai-integration]

Add comprehensive integration tests for Bridge quote fetching system

Summary

This PR adds a comprehensive integration test suite for the Bridge quote fetching system, covering cross-chain transaction flows, quote validation, timeout handling, and error scenarios with external bridge providers. The tests validate the end-to-end behavior of the useBridgeQuoteRequest and useBridgeQuoteData hooks working together with the Bridge controller.

Key test coverage:

• Cross-chain flows: EVM↔Solana and EVM↔EVM transaction scenarios with proper wallet address handling
• Quote validation: Invalid inputs, zero amounts, insufficient balance scenarios
• Timeout/debounce: Multiple rapid requests, loading states, and debounce coalescing
• Error handling: Network failures, provider timeouts, invalid responses, and error recovery
• Quote lifecycle: Refresh logic, expiration handling, and complete fetch-to-display flow
• State transitions: Loading → Fetched → Error → Retry scenarios

The test suite includes 21 test cases organized into 6 logical groups, all passing successfully.

Review & Testing Checklist for Human

3 items - Medium risk areas to validate

• Verify mock accuracy: Review that the mocked BridgeController.updateBridgeQuoteRequestParams calls and state transitions match the real implementation behavior, especially for cross-chain scenarios
• Test the integration tests: Run the test suite locally (yarn test:unit) and verify they can catch real bugs by temporarily breaking the implementation
• Cross-chain logic validation: Manually verify the EVM↔Solana wallet address handling logic matches the actual bridge flow requirements in the app

Notes

• Integration tests are placed in new __tests__/integration/ directory following standard testing conventions
• Tests use existing utilities (createBridgeTestState, renderHookWithProvider) and mock data for consistency
• All lint and TypeScript checks pass with no new issues introduced
• Tests complement existing unit tests by focusing on hook interactions and state transitions

Requested by: mason.batchelor@cognition.ai (@mbatchelor81)
Link to Devin run: https://app.devin.ai/sessions/236a41a40168427b80497d2d2827ac34

[devin-ai-integration]

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