Attempt locale-independent float value.

Attempt to resolve suspicion that some OS/Language character sets may be using a comma for decimal separation, rather than a period e.g. `10,0` vs `10.0`

This could be affecting the repetition penalty setting with XTTS when called from a command line/terminal request where the period `.` isnt being specifed.

tts_server.py

@@ -1216,7 +1216,8 @@ def get_params_speed():
 def get_params_temperature():
     return model_engine.temperature_set
 def get_params_repetition():
-    return model_engine.repetitionpenalty_set
+    value = model_engine.repetitionpenalty_set
+    return float(str(value).replace(',', '.'))
 def get_params_pitch():
     return model_engine.pitch_set
 def get_character_voice_gen():