DTM->Launch migration adds clearVariables() automatically

We have around 30 properties each having around 40 direct call rules. In Launch, compared to DTM, there has to be an Analytics clearVariables action set in order to not have the events stacked on top on every rule being triggered.

Unfortunately the automatic migration from DTM to Launch does not add this action automatically so we need to add those actions manually on every rule.

Idea: have the DTM->Launch migration adding that clearVariables actions automatically.