[LiveComponent] Refactor elementBelongsToThisComponent

[smnandre]

Q	A
Bug fix?	yes
New feature?	no
Issues	Fix #2388
License	MIT

This method is called from multiple places, sometimes before children component are instanciated and stored in the component map.

So let's back to the quickest selector we have: the browser DOM selector :)

We'll know tomorrow, but it could solve #2388

[github-actions[bot]]

📊 Packages dist files size difference

Thanks for the PR! Here is the difference in size of the packages dist files between the base branch and the PR. Please review the changes and make sure they are expected.

File	Before (Size / Gzip)	After (Size / Gzip)
LiveComponent
live_controller.js	120.36 kB / 23.38 kB	120.15 kB0% / 23.38 kB0%

[Pechynho]

I can confirm that this change fixes the issue I reported in #2388. It might be helpful to add a comment about the potential race condition that could occur, so other developers are aware of it when building new plugins. For now, however, this solution seems sufficient to me.

In the future, it might be necessary to address this issue more specifically and deal with the timing problem, but for now, I would say this solution is acceptable.

[smnandre]

Thank you @Pechynho for your time and for showing me where the bug was happening, how it was happening, and for having again time to check if the solution did work.

You cannot imagine how it eases this kind of situation and how it makes a bug almost.. enjoyable :)

I 100% note your comment about the whole "optimistic timing" issue and we will keep it in mind for the incoming changes.