[CP] migrate API docs to use GA4 #136743
Description
Issue Link
Commit Hash
Target
beta
PR Link
Changelog Description
Update the analytics instance used on api.flutter.dev.
Impacted Users
All Flutter developers using api.flutter.dev
Impact Description
The impact of not landing this cherrypick would mean that, moving forward (once Universal Analytics is deprecated), we will have one less stable cycle worth of API docs analytics in GA4.
Workaround
no workaround needed
Risk
low
Test Coverage
yes