Fix: proposal sorting test

[kneerose]

List of changes

• Use content attributes "created at" for proposal date filter
• Ignore the space in the name comparison
• Show validation error message if it fails on sorting
• Increase the timeout for the in-progress status of the transaction

Checklist

• related issue
• My changes generate no new warnings
• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the changelog
• I have added tests that prove my fix is effective or that my feature works

[github-actions]

✅ All checks succeeded

[github-actions]

✅ All checks succeeded

[github-actions]

✅ All checks succeeded