Increase max TTS speed from 3 to 7

[kubalav]

I use Microsoft TTS in Reader View. I seems it is too slow for me. I adjusted speed value to 6 and it is OK.

Can you increase max speed TTS to 7?

[rNeomy]

It causes issues with remote voices; for now open the browser console on a reader tab and use

localStorage.setItem('tts-rate', 6);

and refresh the tab

[kubalav]

I set value to 6 for now. It can be helpful to make array with local and remote voices.