Emit stimulus-reflex:ready event on element instead of document

[marcoroth]

Type of PR

Enhancement

Description

Previously the stimulus-reflex:ready was invoked every time the scanForReflexes() function was called. With the recent changes of being able to load Stimulus controllers async we can't guarantee that the stimulus-reflex:ready was always triggered at the right moment in time and it wasn't guaranteed that all controllers were actually loaded and registered.

Since we can't guarantee that the "whole document and all controllers are loaded and ready", we instead emit an event on the actual element that we know that it is ready and was setup for sure.

Resolves #608

Why should this be added

Consistently and better support for asynchronous loading of Stimulus controllers.

Checklist

• My code follows the style guidelines of this project
• Checks (StandardRB & Prettier-Standard) are passing
• This is not a documentation update