change default value of autoSignIn

[pamapa]

export const AuthProvider: FC<AuthProviderProps> = ({
  children,
  autoSignIn = true,

autoSignIn is a nice feature, but i am not sure if we should turn this on by default. It magically signs in, i first was very surprised how this would work reliable.

Its a feature and oidc-react can also used without the autoSignIn, so lets not enable it by default....