Fix file attachments not rendering file size

[nuno-vieira]

🔗 Issue Links

Resolves https://github.com/GetStream/ios-issues-tracking/issues/679

🎯 Goal

Fix file attachments not rendering file size when loading the attachments from the server.

🛠 Implementation

This issue was happening because we were not rendering the file size the local uploadingState was nil.

🧪 Manual Testing Notes

1. Upload a file
2. Should show the size of the file.
3. Logout
4. Login
5. Load the same file from the server
6. It should still show the size of the file.

☑️ Contributor Checklist

• I have signed the Stream CLA (required)
• This change follows zero ⚠️ policy (required)
• This change should be manually QAed
• Changelog is updated with client-facing changes
• New code is covered by unit tests
• Comparison screenshots added for visual changes
• Affected documentation updated (docusaurus, tutorial, CMS)

[sonarcloud]

Quality Gate passed

The SonarCloud Quality Gate passed, but some issues were introduced.

47 New issues
0 Security Hotspots
90.9% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud