TTS with other provider than Google Speech Services

[joho500]

Is your feature request related to a problem? Please describe.
I have LineageOS installed on my phone and added Vocalizer TTS as text-to-speech provider that is recognized by the Android OS. Google Speech Services is not installed (I like to minimize Google on my devices.) This setup works just fine for other apps but JAWT doesn't see the other TTS-provider and I need to install Google Speech Services to have TTS in JAWT. Selecting Google TTS in the OS is not necessary to have JAWT TTS to work. So it looks like it uses the Google Speech Services directly and doesn't look for the one selected in the OS.

Describe the solution you'd like
I'd like JAWT to recognize and use the TTS provider installed in the OS. That way I can choose the TTS provider I want.

I hope this is possible.
Thanks in advance.