Combining lines breaks function precedence

[ChrisCanCompute]

Description

When some a line of code has an operation on it, and the line is then piped into another function on the next line, fantomas will combine the two lines.
This will break the code if the precedence of operation on the first line is lower than that of the pipe function

This is an issue on all versions.

Repro code

Before, there is a (unit -> unit) option function.
After, there is a unit -> (unit option) function.

simple example

[nojaf]

The provided sample is formatted correctly now.
This was solved when #942 got fixed.