feat(silentTyping): make button/icon visual look better

[xNasuni]

before:

after:

:3

[Vendicated]

this looks very out of place because it is wider than the other icons. that's why the old icon was smaller

optimally we'd just use a different proper square icon

[xNasuni]

the reason I had used a bigger size (36 x 28) was because I thought it looked more odd if it WASN'T scaled up to fit the height of other buttons, it also made it bigger in width, which looking back wasn't really the best move

I sized it back down to 24x24 like all the other chatbar buttons and I think now it does look better.