[4.x]: EVENT_POPULATE_LINE_ITEM fires multiple times

[pixelmachine]

What happened?

Description

I've been using EVENT_POPULATE_LINE_ITEM for a long time in Commerce 3 and I've recently upgraded to 4. However now EVENT_POPULATE_LINE_ITEM seems to fire at least 3 times when an item is added to the cart. Each is identical.

Steps to reproduce

1. Add a module like this.

Event::on(
  LineItems::class,
  LineItems::EVENT_POPULATE_LINE_ITEM, 
  function(LineItemEvent $event) 
  {
     if ($event->isNew) 
     {
       Craft::info($isNew, 'my-module');
     }
  }
);

2. Add an item to the cart.

Expected behavior

A single log entry is created

Actual behavior

Three log entries are created

2023-12-01 21:33:52 [web.INFO] [my-module] true {"memory":44893448} 
2023-12-01 21:33:52 [web.INFO] [my-module] true {"memory":45303680} 
2023-12-01 21:33:52 [web.INFO] [my-module] true {"memory":47529120} 

Craft CMS version

4.5.11.1

Craft Commerce version

4.3.2

Installed plugins and versions

Gift Voucher 3.0.9