fid03
Looks to me like it came with QPR2.
As a P7a user, I was on QPR1 yesterday, and did not have that package. After updating today, now I have it.
OP has the correct package name: com.google.android....
Googling suggests something to do with lockscreen widgets.
BTW, the project did comment on it in this other thread:
GrapheneOS It does not connect to the network or run any code.