bug: Custom Event do not fire in Vue (missing event addEventListener)

[Kyri123]

Prerequisites

• I have read the Contributing Guidelines.
• I agree to follow the Code of Conduct.
• I have searched for existing issues that already report this problem, without success.

Stencil Version

latest

Stencil Framework Output Target

Vue

Stencil Framework Output Target Version

0.8.6

Current Behavior

• event do not emit in Vue also v-models not do work on many common components.

// will never fire!
function checkedChange(e) {
  console.log("checked!") 
}

<IxToggle @checkedChange="checkedChange" />

Expected Behavior

• Events fire here

// will fire now
function checkedChange(e) {
  console.log("checked!")
}

<IxToggle @checkedChange="checkedChange" />

Steps to Reproduce

• Create a web component and add a custom Event()
• add @event to the vue component and it will not fire
• (no v-model)

Code Reproduction URL

https://github.com/Kyri123/ix

Additional Information

MR: #381