fix(chat): Do not send message when channel is disabled (#314)

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (aaf0c0b) 96.30% compared to head (673b827) 96.30%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #319 +/- ## ========================================= Coverage 96.30% 96.30% - Complexity 8872 8874 +2 ========================================= Files 1387 1387 Lines 22596 22601 +5 Branches 1399 1400 +1 ========================================= + Hits 21762 21767 +5 Misses 633 633 Partials 201 201 ```

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