[actions] Handling of "display:none" element as origin

[jgraham]

This should probably return "move target out of bounds" or something, but at the moment the spec algorithm doesn't account for the possibility of an element without bounding client rects.

[juliandescottes]

For https://bugzilla.mozilla.org/show_bug.cgi?id=1805146 I reviewed the behavior of various browsers when trying to trigger a click on an option element of a select (which has no bounding client rect). My test code was:

def test_click_select(session, url, inline, mouse_chain):
    session.url = inline("""
            <select>
                <option value="foo">Foo</option>
                <option value="bar">Bar</option>
            </select>
        """)

    select = session.find.css("select", all=False)
    mouse_chain.click(element=select).perform()

    option = session.find.css("option[value='bar']", all=False)
    mouse_chain.click(element=option).perform()

    value = session.execute_script("return document.querySelector('select').value;")
    assert value == "bar"

And testing on various browsers, I had the following results:

• Firefox fails with webdriver.error.MoveTargetOutOfBoundsException: move target out of bounds (500): Origin element is not displayed
• Chrome fails with webdriver.error.WebDriverException: element not interactable (400): element not interactable: [object HTMLOptionElement] has no size and location
• Safari completes the test without throwing any error but fails the assert, meaning it didn't actually click on the option

(see the bug for results with older Firefox versions, as I was trying to check if there had been a regression on that front)