Priority for lazy chartjs custom controller

[SosthenG]

Hi!

I'm using Symfony UX Chart.js with a custom controller to add some plugins.
For performance reasons I want to load @symfony/ux-chartjs and my custom controller lazily because they are only needed on a few pages, but it does not work as I expected.
As my custom controller have to listen to the chartjs:pre-connect event, it needs to be loaded before the ux-chartjs controller is connected, but when both are lazy the opposite happens. I can see in the console that the ux-chartjs controller is initialized and connected before my custom controller, so the listener cannot be registered in time:

symfony--ux-chartjs--chart #initialize
symfony--ux-chartjs--chart #connect
[... later ...]
chart #initialize
chart #connect

When my custom controller is not lazy, it is loaded in the right order:

chart #initialize
chart #connect
symfony--ux-chartjs--chart #initialize
--> Here my preconnect event listener is called
symfony--ux-chartjs--chart #connect

I'm using AssetMapper, in controllers.json ux-chartjs have "fetch": "lazy" and I added /* stimulusFetch: 'lazy' */ before my custom controller.

What can I do to make this work? Is there a way to add lazy priorities to ensure my custom controller is loaded first or am I doing something wrong?