test: e2e test helper refactor (WPB-26603)

[emmaoke-w]

https://wearezeta.atlassian.net/browse/WPB-26603

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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

  • is free of optional paragraphs and you have filled the relevant parts to the best of your ability

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What's new in this PR?

• Refactored TestServiceHelper so it stays focused on actions that go through the Test Service, instead of also owning backend setup flows.
• Refactored UIAutomator tests to use one shared ClientUserManager across backend setup, Test Service actions, calling helpers, and teardown cleanup.
• Refactored BackendClient helper logic into focused backend extension files for auth, users, teams, conversations, connections, client/device cleanup, SSO, and calling.
• Refactored backend state preparation into a new BackendSetupHelper for users, teams, conversations, connections, team features, and bots.
• Refactored benchmark startup fixture setup to use ClientUserManager and BackendSetupHelper, matching the updated UI test infrastructure.

Issues

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Causes (Optional)

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Solutions

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Dependencies (Optional)

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Needs releases with:

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Testing

Test Coverage (Optional)

• I have added automated test to this contribution

How to Test

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PR Post Submission Checklist for internal contributors (Optional)

• Wire's Github Workflow has automatically linked the PR to a JIRA issue

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PR Post Merge Checklist for internal contributors

• If any soft of configuration variable was introduced by this PR, it has been added to the relevant documents and the CI jobs have been updated.

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References

1. https://sparkbox.com/foundry/semantic_commit_messages
2. https://github.com/wireapp/.github#usage
3. E.g. feat(conversation-list): Sort conversations by most emojis in the title #SQPIT-764.

[pull-request-size]

Ups 🫰🟨

This PR is too big. Please try to break it up into smaller PRs.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 49.33%. Comparing base (49e7100) to head (e8c8bf9).
⚠️ Report is 8 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #5013      +/-   ##
===========================================
+ Coverage    49.31%   49.33%   +0.02%     
===========================================
  Files          650      653       +3     
  Lines        23457    23512      +55     
  Branches      3606     3607       +1     
===========================================
+ Hits         11568    11600      +32     
- Misses       10813    10839      +26     
+ Partials      1076     1073       -3     

see 10 files with indirect coverage changes

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[sonarqubecloud]

Quality Gate passed

Issues
33 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
1.6% Duplication on New Code

See analysis details on SonarQube Cloud