Fish-pro: Clean up to use `nil` as the context argument

JobBuild
499
03-03 00:33
pull-scheduler-plugins-integration-test-master 1631452558197264384
pull-scheduler-plugins-unit-test-master 1631452558146932736
pull-scheduler-plugins-verify 1631452558054658048
pull-scheduler-plugins-verify-build-master 1631452558100795392