[📚] Disabling Flutter Web SDK injection

[pepealonso95]

Im trying to run a chrome extension using flutterfire but downloading external scripts is not possible due to chrome's manifest security policies. Your documentation shows on how to download js sdk's locally but firebase_core is not included in the process so I am unable to run the build:

https://firebase.google.com/docs/flutter/setup?platform=web#disable-auto.