Adjusting Phone Call Greetings to sound more natural

[AlaricWhitney]

What problem would you like to solve? Please describe:
Currently the phone call structure of This is {Appname} {details} {options} sounds run together like once long sentence.

Describe the solution you'd like:
I propose to adjust the phone call structure to Hello! This is {Appname} <700ms pause> {details} {options}

Describe alternatives you've considered:

Additional context:

[mastercactapus]

Addressed by PR ^

Also, #2602 should help with testability with more complex voice changes.