feat(sdk-api): Add support for passing constants to the SDK as an optional parameter

[danielpeng1]

Added optional clientConstants parameter to the BitGoAPI constructor, allowing users to provide/pass constants that override server-fetched values to the SDK.

• Notably, modified fetchConstants() to merge server constants with client constants (client overrides take precedence).
• Unit test in test/unit/bitgoAPI.ts passing in a constant under this flow.

Ticket: WP-5538

[Copilot]

Pull Request Overview

This PR adds support for passing client constants to the BitGoAPI constructor, allowing developers to provide constants that override server-fetched values. This enables more flexible configuration and testing scenarios.

• Adds an optional clientConstants parameter to the BitGoAPI constructor options
• Modifies fetchConstants() method to handle caching logic and merge client/server constants
• Updates test files to use the new client constants parameter instead of complex mocking

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
modules/sdk-api/src/types.ts	Adds Constants type and clientConstants property to BitGoAPIOptions interface
modules/sdk-api/src/bitgoAPI.ts	Implements client constants storage in constructor and updates fetchConstants caching logic
modules/sdk-api/test/unit/bitgoAPI.ts	Adds comprehensive unit tests for constants caching and client constants functionality
modules/sdk-api/test/unit/v1/wallet.ts	Replaces complex fetchConstants mocking with simpler clientConstants parameter usage

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[pranavjain97]

Also, lets squash the commits please.

[pranavjain97]

lesgo!