Change Details

This is part of addressing [ENG-8425](https://linear.app/comm/issue/ENG-8425/update-usepeertopeermessagehandler-to-handle-e2ee-dm-updates). I'll submit a follow-up diff that introduces a new action here to process the resultant data we receive. Submitting this now so @tomek can see the code, as his work relates to this code. Depends on D12740

This is part of addressing [ENG-8425](https://linear.app/comm/issue/ENG-8425/update-usepeertopeermessagehandler-to-handle-e2ee-dm-updates). I'll submit a follow-up diff that introduces a new action here to process the resultant data we receive. Submitting this now so @tomek can see the code, as his work relates to this code.

This is part of addressing [ENG-8425](https://linear.app/comm/issue/ENG-8425/update-usepeertopeermessagehandler-to-handle-e2ee-dm-updates). I'll submit a follow-up diff that introduces a new action here to process the resultant data we receive. Submitting this now so @tomek can see the code, as his work relates to this code. Depends on D12740