fix(compat): ensure fallthrough *Native events are not dropped during props update (fix #5222)

[LinusBorg]

This PR solves #5222 where a fallthrough event listener from a Vue 2 v-bind.native was removed on a component re-render.

I would need some guidance regarding how to add a test for this.

[oswaldofreitas]

can't we move it to p1 or p2? 😀
I'm trying to migrate a big project to Vue 3 and this issue is blocking me

Thank you for the PR

[oswaldofreitas]

@yyx990803 We got to migrate to Vue 3 using this amazing compat mode, however this is the last issue for us to fix before pushing forward to production. The more we wait on it the more conflicts we have which is pretty hard to handle since it's a big codebase, so... If you prioritize this relatively simple one I can pay you a coffee 😀

I hope U$ 10 pay a ☕️ in Singapore?

[LinusBorg]

Coffees don't buy a spot in a (non-existant) priority queue, I'm afraid 🙃

Do you have a lot of native event listeners in your codebase? If their occurrences aren't too numerous you should be able to just remove them and make sure the few components you declared them on have their non-native events declared with emits: .

[oswaldofreitas]

yes, I have some .native listeners, not sure how many, but I'll definitely search all places and go with your suggestion, thanks again, and sorry for the coffee joke, it wasn't my intention to "buy" a position in the queue, but to say how important this fix is for me :)

[LinusBorg]

I understand. We are moving a bit slower right now as the new docs are being polished for publishing, amongst other reasons. We will pick up speed soon. :)