chore(eslint): add warning when using async preventDefault()

[Shane-Donlon]

What is it?

• Developer experience Improvement opportunity
  See also [🐞] onSubmit$ form handler not preventing default #7718

Description

Hey guys,
Feedback welcome - but thought I'd propose this as an idea.

While the knowledge exists in the documentation, the goal here is to prompt Developers that this is not a bug and to search the docs or to ask within Discord.

This does exclude sync$((e)=>{e.preventDefault()} functions, and I did add this as a warning over error just in case there was something else I wasn't considering, and wouldn't result in breaking any builds.

Checklist

• [ x] My code follows the developer guidelines of this project
• [x ] I performed a self-review of my own code
• [ x] I added new tests to cover the fix / functionality

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Latest commit: 182c859

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commit: 182c859

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[maiieul]

Really good idea 🔥 Thanks a lot @Shane-Donlon!

[maiieul]

Can you add a link to the docs? Also I think this should suggest the use of sync$ too. WDYT?