100 scaled image => OutOfMemory

Note that with XWIKI-21546 we're now using https://github.com/haraldk/TwelveMonkeys/blob/master/imageio/imageio-jpeg/src/main/java/com/twelvemonkeys/imageio/plugins/jpeg/JPEGImageReader.java

Maybe that implementation is less resource-intensive. Michael Hamann idk how you tested but if you have a script to generate a page with lots of images or a XAR, it would be easy to retry. Thx