ensure that lazy <img> loading does not add a fingerprinting vector
From #33534 (closed): Firefox 75 added support for the
loading attribute of HTML
<img> elements. This string value can be used to specify that the image should be lazily loaded, by setting its value to
lazy. This could allow sites to track a user's scrolling behavior and use it for fingerprinting. Maybe that is OK since:
We should confirm.
<img loading="lazy"> lazy-loading"