[IMPROVE] Display channel avatar on the Header

[bhavayAnand9]

Proposed changes

channel avatar was not appearing in the top bar unlike direct message

Issue(s)

#19083

How to test or reproduce

Screenshots

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• Improvement (non-breaking change which improves a current function)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Hotfix (a major bugfix that has to be merged asap)
• Documentation Update (if none of the other choices apply)

Checklist

• I have read the CONTRIBUTING doc
• I have signed the CLA
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works (if applicable)
• I have added necessary documentation (if applicable)
• Any dependent changes have been merged and published in downstream modules

Changelog

display channel avatar in top bar

Further comments

[CLAassistant]

All committers have signed the CLA.

[bhavayAnand9]

Hi! @gabriellsh Can you please review this PR? Thanks

[ggazzo]

could you remove the isDirect from helpers since we don't use anymore? thanks :)

[bhavayAnand9]

Hi! @ggazzo I've removed the unused code, Please rereview. Thanks : )