fix: cors issue

[abdou6666]

Motivation

This PR addresses the issue of CORS not being dynamic E.g : user updates settings of allowed origins of a channel but they don't take effect unless user changes them through env variable & then re-starts application

Fixes # (issue)

Type of change:

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• I have performed a self-review of my own code
• I have added unit tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes