fix(cdk/testing): emit pointer events on hover and mouseAway (#20098)
fix(cdk/testing): emit pointer events on hover and mouseAway (#20098)

In 9cd18911d40084b6a01a9c93ec45370f03e3ad76 pointer event simulation was added to `UnitTestElement.click` to closer simulate the events that happen inside the browser. These changes expand the coverage to the `hover` and `mouseAway` methods since they can dispatch pointer events too.
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