fix: Add missing staging backend verification for analytics (WPB-10736)

[alexandreferris]

WPB-10736 [Android] Analytics enabled shows false for users on staging, after they agreed to share data

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PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

• The PR Description

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What's new in this PR?

Issues

There was no verification for staging backend api when observing analytics toggle change

Causes (Optional)

Missed out this part

Solutions

Add staging backend api when observing analytics toggle change to propagate identifier and initialize analytics

[sonarcloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

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

See analysis details on SonarCloud

[github-actions]

Built wire-android-staging-compat-pr-3366.apk is available for download

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 44.75%. Comparing base (29f877e) to head (94d121a).
Report is 25 commits behind head on release/candidate.

Additional details and impacted files

@@                Coverage Diff                 @@
##           release/candidate    #3366   +/-   ##
==================================================
  Coverage              44.74%   44.75%           
==================================================
  Files                    456      456           
  Lines                  15401    15403    +2     
  Branches                2572     2574    +2     
==================================================
+ Hits                    6891     6893    +2     
  Misses                  7783     7783           
  Partials                 727      727           

Files with missing lines	Coverage Δ
...analytics/ObserveCurrentSessionAnalyticsUseCase.kt	83.33% <100.00%> (+0.98%)	⬆️

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