Make Chrome to skip @skip_chrome_zerosize features

Recent versions of Chrome have a problem under some situations where, due to some rounding problems returns:

element not interactable: element has zero size

We have labeled all the affected scenarios in core with the @skip_chrome_zerosize and, by default, we'll be skipping all those scenarios when no tags are specified.

See https://tracker.moodle.org/browse/MDL-72589 for more info.