Refactor to include audio data for all MQ-originated requests (#188)

# Description
Replace check for `klat_data` context with `mq` context to include
encoded audio in responses to other clients (i.e. Gradio)

# Issues
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# Other Notes
Currently works because the messagebus-mq connector module [guarantees
Klat
context](https://github.com/NeonGeckoCom/neon-messagebus-mq-connector/blob/65192ecdd9f896799a2be3a9a76bdffa566c9527/neon_messagebus_mq_connector/controller.py#L313-L320)
for any MQ messages received

Author: NeonDaniel

neon_audio/tts/neon.py

@@ -352,7 +352,7 @@ def get_multiple_tts(self, message, **kwargs) -> dict:
                 responses[tts_lang][request["gender"]] = wav_file
                 responses[tts_lang]["genders"].append(request["gender"])
                 # If this is a remote request, encode audio in the response
-                if message.context.get("klat_data") or \
+                if message.context.get("mq") or \
                         message.msg_type == "neon.get_tts":
                     responses[tts_lang].setdefault("audio", {})
                     responses[tts_lang]["audio"][request["gender"]] = \