Add unit tests for src/services/api/circuitBreaker.ts

[RUKAYAT-CODER]

Overview

The service module src/services/api/circuitBreaker.ts has no unit test. Adding focused tests documents its behaviour and guards against regressions.

Specifications

Features:

• The module has unit tests for its exported functions and key edge cases.

Tasks:

• Add src/services/api/__tests__/circuitBreaker.test.ts covering the module's exports: at least one happy path each plus an error/edge case, mocking external dependencies (network, async storage, native modules).

Impacted Files:

• src/services/api/__tests__/circuitBreaker.test.ts

Acceptance Criteria

• New unit tests for the module pass in CI and exercise its exports.
• All the CI passes
• Star the repo