no-redundant-roles ignores type number in input

[andre-matulionis-ifood]

Sandbox reproducing: https://codesandbox.io/s/jsx-a11y-no-redundant-role-p6ojt?file=/src/App.js

For a <input type="number"/> in the HTML, the implicit role of it is spinbutton. This happens both in Chrome 81 (image) and Firefox 76.

So it can be concluded that in <input type="number" role="textbox" /> the role attribute is not redundant, since it modifies the implicit role of the HTML. However the rule no-redundant-roles does not consider this.

[jessebeach]

@andre-matulionis-ifood it's worse than that. The semantics change to textbox in the AX Tree, but the UX in the browser remains a spinbutton. I think you discovered a new category of how to abuse HTML input semantics :) There will be some cases that are OK, like upgrading a textbox to a combobox, but cases like the one you point out where the semantics and UX are incompatible.

Let's make this a new rule issue instead of a bug.