Enable activities v2 flag

Goal

Start to conduct the activities v2 experiment

What needs to be done

Final audit of activities v2
Turn on front-5229-activities flag for canary users so we can get feedback on it

QA

It's already been QA-ed

UX/Design

N/A

Personas

N/A

Experiments

front-activities-5229

Acceptance Criteria

Complete one final visual pass of activities v2
Enable the flag

Definition of Ready Checklist