Bug Description

Following the implementation of #1583, Performance features are now installed and activated via AJAX. However, during smoke testing, I observed issues when activating multiple features / plugins sequentially.

Steps to Reproduce

1. Activate Modern Image Formats, Embed Optimizer, and Web Worker Offloading one by one.
2. Check the status on the Installed Plugins page and the Performance Features page.

Observed Behaviour

• On the Installed Plugins page:
  • Embed Optimizer and its dependent Optimization Detective plugins are not marked as activated.
• On the Performance Features page:
  • Initially, Embed Optimizer appears as activated. However, after reloading the page, its state changes to Activate.

Additional Scenario

• When activating all performance features / plugins one by one, some features remain only installed and not activated.

Screen Recording & Screenshots: