Commandless Text-only TTS channels not working

[rjDipcord]

:bug: Channel-based text-only commandless TTS channels not working.

Configured bot to use a specific engine on a specific channel. Used /say command to force bot to join VOIP chat and yet, any plain text entered into the text channel does not get fed into the TTS bot.

:pencil2: Steps to Reproduce

1. set "enable_tts_channels": true,
2. Choose a # channel that the bot has access to.
3. Run /set_channel_provider and choose any engine.
4. Bring bot into your VOIP channel with /say command.
5. Type plain text into the # channel.
6. Note the bot does not announce your text.

:confused: Expected behavior

TTS bot should speak the plain text with the provider set.

:scroll: Log

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