fix: do not treat unknown thing group membership as empty membership - #1826

fix: do not treat unknown thing group membership as empty membership#1826

aws-kevinrickard wants to merge 2 commits into

mainaws-greengrass/aws-greengrass-nucleus:mainfrom

regression/thing-group-membership-preservationaws-greengrass/aws-greengrass-nucleus:regression/thing-group-membership-preservationCopy head branch name to clipboard