Allow onerror to be ignored from nested-interactive

[amk221]

Usecase is as follows:

<img onerror={{action 'imageFallback'}} src="does-not-exist.png">

The above warns with Interaction added to non-interactive element

It's not really being used in an interactive way, so it would be good to be able to ignore onerror. But still receive linting warnings if I were to type <img onclick={{action 'doSomething'}}>

[amk221]

Apologies, I just got tipped off about this related, already closed issue

https://github.com/rwjblue/ember-template-lint/issues/118

[rwjblue]

I believe this is also related to https://github.com/rwjblue/ember-template-lint/issues/242. I am not sure if @tim-evans has had a chance to start looking into the approach we discussed there though...

[tim-evans]

@rwjblue I haven't had a chance yet