Change opt-in defaults based on regional requirements

[rkarodia]

Functional changes

1. Regions requiring an informational cookie banner, should present unchecked opt-ins by default

1. Regions requiring a cookie banner with opt-out features, should present unchecked opt-ins by default 1. Regions without cookie consent requirements, should present checked opt-ins by default * **Note: the user must still confirm manually. Dismissing the dialog will opt-out **

b/517213171

Changes

1. Using the cookie bar library to detect the region and propagates the default state via comlink to the guest shell.

[github-actions]

📊 Coverage Report

Metric	PR	Main	Delta
Lines	96.55%	96.55%	⚪ +0.00%
Functions	96.98%	96.98%	⚪ +0.00%
Branches	93.20%	93.20%	⚪ +0.00%