use ref instead of url for clarity CU-86dxhr7zg

[dany-pellerin]

Why this change?

Refactoring the targeting configuration parameter from url to ref for better semantic clarity and consistency.

What is changed?

• Service: Optable Web SDK
  • Areas:
    • Configuration system
    • Edge targeting functionality
    • Test suite

The change renames the additionalTargetingSignals.url parameter to additionalTargetingSignals.ref throughout the codebase. This affects:

• Configuration type definitions in lib/config.ts
• Edge targeting implementation in lib/edge/targeting.ts
• All related test files (lib/config.test.ts, lib/edge/targeting.test.js)

The functionality remains identical - the parameter still captures the current page URL/reference for targeting purposes.

The change has been made an approved in edge already.

How to test the changes?

Automated tests:

• Configuration tests in lib/config.test.ts verify the new ref parameter works correctly
• Targeting tests in lib/edge/targeting.test.js ensure the ref parameter is properly included/excluded based on configuration
• Tests cover all scenarios: ref: true, ref: false, ref: undefined, and when not provided

Manual testing:
The change is simple enough, well covered by tests.

Dependency changes?

• No