GROWENG-3933 refactor dataLayer.push for GA4 structure #13998

[samhotep]

Done

• Recreated #13998

• Refactored sendContributionFormAnalytics function not to send multiple GAEvent pushes to the dataLayer but to send one push with the data as key-value pairs within that push in order to respect GA4 event parameter data model

QA

• Visit https://ubuntu-com-14030.demos.haus/download/desktop/thank-you?version=24.04&architecture=amd64&lts=true
• Click on contribution with various contribution amount settings (including 0)
• Check the value of the dataLayer array in the console whether the "contribution" event object in the array appears and whether it has the correct data

Help

QA steps - Commit guidelines

[webteam-app]

Demo

Jenkins

demos.haus

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 74.12%. Comparing base (1c1b92e) to head (eeb01ff). Report is 4 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #14030 +/- ## ======================================= Coverage 74.12% 74.12% ======================================= Files 107 107 Lines 2864 2864 Branches 957 957 ======================================= Hits 2123 2123 Misses 715 715 Partials 26 26 ```