Bug XF2.3's XF.ajax behaves differently depending on HTTP method for handling data argument

[Xon]

In XF2.2, XF.ajax supported GET method using $(form).serializeArray() for the data argument. In XF2.3 this fails when using the replacement method XF.Serializer.serializeArray.

Both versions of serializeArray produce the same output format ie;
JSON:

[
{name:'foo', value: 'bar}
]

In XF2.3, XF.ajax use URLSearchParams to encode the arguments for GET which doesn't support serializeArray output format.
JavaScript:

async ajax (method, url, data = {}...

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