Removing whitespace in multiline strings?

[tgodzik]

I can't find if this was on purpose and I don't remember it to be, but scalafmt will now remove trailing spaces in multiline strings, which makes the Metals update quite impossible unless we do a lot of ignores.

A lot of the times the spaces are actually correct, for example we are checking the position of the cursor after some edits. It should have indentation.

Could we put that behaviour under an option?

scalameta/metals#7224 and scalacenter/bloop#2613 both fail and the metals PR would require quite a lot of work.

[kitbellew]

#4836