After checking all modules with
bin/find-unneeded-includes --finderrors --headers --recursive
these subdirectories seemed to need custom assumes for an
error free run of IWYU
Change-Id: I8e0553355809e49e3ec3d06aa4404e6cd7b72aff
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/196631
Tested-by: Jenkins
Reviewed-by: Gabor Kelemen <gabor.kelemen@collabora.com>