fix: update custom fields to be set with user data [WPB-14522]

[e-maad]

WPB-14522 [Web] Modification of the app.open event

Description

Updated custom fields to be set with user data.

Checklist

• mentions the JIRA issue in the PR name (Ex. [WPB-XXXX])
• PR has been self reviewed by the author;
• Hard-to-understand areas of the code have been commented;
• If it is a core feature, unit tests have been added;

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 45.99%. Comparing base (6f3529f) to head (c300403).
Report is 1 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev   #18689   +/-   ##
=======================================
  Coverage   45.99%   45.99%           
=======================================
  Files         894      894           
  Lines       27459    27459           
  Branches     6201     6201           
=======================================
  Hits        12631    12631           
  Misses      13263    13263           
  Partials     1565     1565