[logging/debug] move transaction operations logs from self.debug to DBG_OPS
There were a mixing between displaying transaction operations log on
logger.debug and only when DBG_OPS was on, uniformize everything behind
DBG_OPS.
Closes #17229126
version=3
opts=uversionmangle=s/(rc|a|b|c)/~$1/ \
https://pypi.debian.net/cubicweb/cubicweb-(.+)\.(?:zip|tgz|tbz|txz|(?:tar\.(?:gz|bz2|xz)))