[FEATURE] api-client split unit tests for browser and node environment in some relevant differences

[mkucmus]

Description

createAPIClient.test.ts is an example when jsdom is being used - to emulate the browser context.
in that specific case we have to deal with an api instance that can be used in node.js environment and in the browser, then:

• errors/rejections can vary
• conditional statements need to take care of it

Use Case

provide bullet proof tests for both envs

Proposed Solution

No response

Alternatives Considered

No response

Additional Context

No response