fix: rank udt-accent power icons by name order and size

find_icon merged all candidate names into one set and ranked across
them, so a later alternate name could beat the first name present, and
size directories spelled 48x48 or scalable were not parsed. Try the
names in order instead: the first with a match wins, and within a name
prefer -symbolic, then scalable, then the largest size directory.
Update the docstring and selftest comment to match, extend the selftest
with size and name-order cases.

Add the missing GPL-2.0-only SPDX line.

0 files changed, 0 insertions, 0 deletions