feat: multi-ingress SSO flow - WPB-23281

[netbe]

WPB-23281 [iOS] Implement multi-ingress SSO flow

Issue

This PR adds multi-ingress SSO flow support for API v15.

• Checks first if email has an associated sso code and redirect to login

Testing

See details in ticket's comment

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Checklist

• Title contains a reference JIRA issue number like [WPB-XXX].
• Description is filled and free of optional paragraphs.
• Adds/updates automated tests.

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UI accessibility checklist

If your PR includes UI changes, please utilize this checklist:

• Make sure you use the API for UI elements that support large fonts.
• All colors are taken from WireDesign.ColorTheme or constructed using WireDesign.BaseColorPalette.
• New UI elements have Accessibility strings for VoiceOver.

[github-actions]

Test Results

111 tests   111 ✅  8s ⏱️
 22 suites    0 💤
  1 files      0 ❌

Results for commit d15f6d1.

♻️ This comment has been updated with latest results.

Summary: workflow run #26216657415
Allure report (download zip): html-report-30180-feat_multi-ingress

[sonarqubecloud]

❌ The last analysis has failed.

See analysis details on SonarQube Cloud

[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