Improve erroring for login issues

[RyanLua]

Description

Improves the login error by checking every time an LoginRequiredException may be raised instead of only at the start.

Related Issues

Changes Made

Check for LoginRequiredException every time we check for posts instead of at the start.

Checklist

• [x] I have tested these changes thoroughly.
• [x] I have reviewed my code for any potential errors or issues.
• [x] I have followed the code style guidelines for this project.

Additional Notes

Code of Conduct

By submitting this issue, I agree to follow the Code of Conduct.

[github-actions[bot]]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

OpenSSF Scorecard

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