Accomodate updated payload structure

[jeawhanlee]

Description

Adds support for updated payload for multiple feature factories. https://wp-media.slack.com/archives/CUT7FLHF1/p1722433782954279

Documentation

User documentation

Allow other feature using the beacon work properly.

Technical documentation

Accommodate other features payload instead of dying after first feature ajax request is processed.

Type of change

• Bug fix (non-breaking change which fixes an issue).
• Enhancement (non-breaking change which improves an existing functionality).

New dependencies

None

Risks

None

Checklists

Feature validation

• I validated all the Acceptance Criteria. If possible, provide sreenshots or videos.
• I triggered all changed lines of code at least once without new errors/warnings/notices.
• I implemented built-in tests to cover the new/changed code.

Documentation

• I prepared the user documentation for the feature/enhancement and shared it in the PR or the GitHub issue.
• The user documentation covers new/changed entry points (endpoints, WP hooks, configuration files, ...).
• I prepared the technical documentation if needed, and shared it in the PR or the GitHub issue.

Code style

• I wrote self-explanatory code about what it does.
• I named variables and functions explicitely.
• I protected entry points against unexpected inputs.
• I did not introduce unecessary complexity.

[wordpressfan]

Thanks @jeawhanlee
Is the PHP part available in the plugin now? or we just need to validate the code here without testing?

[jeawhanlee]

@wordpressfan It's here awaiting testing by QA

[wordpressfan]

I think we are fine to merge this one, what do u think @jeawhanlee @MathieuLamiot ?