Limit tree size for DC tiles
Limit tree size for DC tiles

Image "size" for DC tile is 2048x2048. If there is e.g. 13 channels,
then tree is allowed to grow to 50M nodes. But when tree reaches 32M nodes,
for resizing it would temporarlily require ~4GiB...
libjxl/libjxl,libjxl/libjxl,libjxl/libjxl,libjxl/libjxl,libjxl/libjxl,libjxl/libjxl,libjxl/libjxl,libjxl/libjxl