Data cache not functioning since 3.3.1

[maciej-baruch]

Hey.
I noticed that my data cache stopped functioning ever since I upgraded to 3.3.3 (from 3.2). I went through the code, debugged some, did some testing by myself and I feel like I found an issue.
When an event is extended in the 'request' nitro hook, any changes introduced to the event are lost, only event.context changes persist:

FYI - I am doing SSR in SWR mode (no pregenaration).

Apparently Nitro might create new events through lifecycle and it won't be able to copy over keys that it is not aware of.
This might also happen in middlewares.

Would you welcome a PR that puts stuff on event.context instead of just event?