preserveTexts (and likely hideElements) Does Not Error If Elements Not Found

[vkoves]

If you have some code like:

await I.dontSeeChanges('my-page', {
  preserveTexts: ['.potato', '.supp-info'],
  hideElements: ['.cooookie-popup'],
});

And those selectors are invalid, nothing will error, letting unexpected behaviors come through. I think these should throw errors since you're telling the visual testing layer to do something (hide an element or read and restore text in an element) that it cannot do.