test(binding-http): add unit tests for CORS behavior

[siddharthbaleja7]

Description

This PR adds unit tests to binding-http to verify CORS behavior, addressing the need for regression testing mentioned in issue #938.

The new tests cover:

• CORS headers for nosec security scheme (wildcard origin).
• CORS headers for basic security scheme (reflected origin + credentials), covering both authorized (200) and unauthorized (401) responses.
• CORS headers for OPTIONS preflight requests.

Motivation and Context

Currently, http-server implements CORS logic but lacks specific unit tests. These tests ensure that CORS headers are correctly set for different security configurations and request types, preventing future regressions.

How Has This Been Tested?

• Ran npm run test in packages/binding-http.
• Verified that all 80 tests (including the 4 new CORS tests) passed.
• Ran npm run lint and npm run format to ensure code quality.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Test (adding missing tests or correcting existing tests)

Checklist:

• My code follows the code style of this project.
• I have added tests to cover my changes.
• All new and existing tests passed.

[relu91]

Good job! I'd probably just extend this current list of tests with also "writing" operations, which means testing: POST requests too (and cover writable properties + actions invocations). Can you add those cases too?

[relu91]

good to go! Thanks!