False negative for jquery-ember-run for many jquery element references

```js
import $ from "jquery";
const $el = $("#item");
$el.on("click", () => this.handle());
```
passes, but it should fail.

```js
import $ from "jquery";
const $parent = $("

");
$parent.find("button").on("click", () => this.handle());
```
should also fail, but passes.

I agree that the rule should not trigger for arbitrary `someVar.on("click", callback)` scenarios, but when the property is known to be a jQuery element reference, it should trigger.