[no-extran-class] allowWithDecorator should ignore other errors

[JounQin]

• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages.
• I have read the FAQ and my problem is not listed.

Repro

{
  "rules": {
    "@typescript-eslint/no-extran-class": [
      2,
      {
        "allowWithDecorator": true
      }
    ]
  }
}

@NgModule({
  // ...
})
export class AppModule {
  constructor(translate: TranslateService) {
    translate.locale$.subscribe(locale => {
      document.documentElement.setAttribute('lang', locale);
    });
  }
}

Expected Result

Pass

Actual Result

error  Unexpected class with only a constructor  @typescript-eslint/no-extraneous-class

Additional Info

Versions

package	version
@typescript-eslint/eslint-plugin	4.15.2
@typescript-eslint/parser	4.15.2
TypeScript	4.1.5
ESLint	7.20.0
node	12.20.0

[JounQin]

cc @a-tarasyuk