fix: avatar not loaded after login - WPB-24860 🍒

[github-actions]

This PR was automatically cherry-picked based on the following PR:

• fix: avatar not loaded after login - WPB-24860 #4595

Original PR description:

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WPB-24860 [iOS] [Profile] Own profile picture is not displayed when starting the app for the first time by user

Issue

After first login, the self user avatar is not loaded in the leading toolbar item of the conversation list. This is because the avatar view uses the image data set on the Account object, which is not set directly after login but only later. The solution is to fallback to the user image data (stored on ZMUser) which is set after login.

Testing

• Log in fresh
• Check the avatar is loaded with the profile picture of the self user

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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.

[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