FR: Support Google Tag Manager Server-side by allowing changes to GTAG_URL #5065
Description
[REQUIRED] Describe your environment
- Operating System version: N/A
- Browser version: N/A
- Firebase SDK version: 8.6.8
- Firebase Product: analytics
[REQUIRED] Describe the problem
Add support to Google Tag Manager Server-side by allowing changes to GTAG_URL before initializing Firebase Analytics.
More information about Tag Manager Server-side can be found here: https://developers.google.com/tag-manager/serverside