Changes to summary keyboard in calculator

[Fidel365]

Fixes partially #9440
@rdstern I saw to do this, on the calculator part, it's ready for review.

[rdstern]

@Fidel365

a) The keyboard layout is fine. Well done.
b) But look below:

you have included the name of the data frame after x = .
Instead it should be blank and with the cursor there, so the correct variable can be included.

This is both for quantile and quantile3.
And can you make the tooltip a bit shorter. So: for the variable, from the ggplot2 diamonds, gives

[Fidel365]

@rdstern ready once more.

[rdstern]

@Fidel365 that's great. Thanks
@N-thony please can you check, and I hope approve. Vice, bvital to include this in the release.