SVG image plugin collides with other image plugins reading gzip compressed data

The SVG image plugin claims that it supports any gzip compressed data, not only compressed SVG data. If there is another Qt image plugin that also reads gzip compressed data like QtPBFImagePlugin installed, reading the image size using QImageReader:

QBuffer buffer(&data);
QImageReader reader(&buffer);
QSize tileSize(reader.size());

fails for MVT images.