[Button] performClick() behavior when MaterialButton is disabled

[pubiqq]

Components such as android.widget.Button and android.widget.CheckBox perform click actions when the performClick method is called, even if they're disabled. I see no reason why the MaterialButton should be any different.

Also, the original implementation is incorrect because clicking on the disabled button works inconsistently; it doesn't invoke the toggle() method, but still performs click actions.

Originally posted by @pubiqq in #4967

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Material Library version: 1.14.0-alpha10