See bug #11733, which documents this deprecation:
The
.load()method is an ambiguous signature, it can either be an ajax
load or attach/fire a “load” event. CCAO cannot tell them apart since
it’s a dynamic decision based on arguments.
To avoid ambiguities related to the method’s signature, it is now recommended to use on() instead. For instance:
$("selector").load(function() {
// ...
});
Should become:
$("selector").on("load", function() {
// ...
});