I previously used a PLIST for managing Chrome and Edge including pushing 2 extensions for all users. This worked, it pushed them in an active state, no problems.
Seeing you can now get nice JSON config files that let you toggle any setting within Jamf I switched to that but when push the 2 extensions they are both loaded, locked but disabled.
Its my understanding that you can add keys in an additional plist to configure extension settings, including if its enabled or disabled but so far not been able to find how.
I have Jamf manifests for Chrome and Edge here to create configuration profiles that will install and enable extensions. These may get you what you need.
The manifests are here:
Instructions are here: