Enable GA4 Client ID for Snowplow

What does this MR do and why?

This MR updates ga4 clientid for snowplow.

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

1. Copy ga cookies from gitlab.com to local gdk.

1. Enable snowplow micro in GDK by following this docs
2. Refresh any page in GDK and verify ga cookie context in snowplow micro UI.

Related to #469410