Compiled operators names are replaced with source names

[auduchinok]

Sometimes using compiled name is preferred as source name produces a warning in this particular case. The problem is FCS replaces all source names with compiled names in AST idents and we don't know whether compiled or source name was used in the actual code.

Issue created from fantomas-ui.

Code

type T() =
    static member op_LessThan(a, b) = a < b

Result

type T() =
    static member (<) (a, b) = a < b

Options

Fantomas 2.9.1

Name	Value
IndentSpaceNum	4
PageWidth	80
PreserveEndOfLine	true
SemicolonAtEndOfLine	false
SpaceBeforeArgument	true
SpaceBeforeColon	true
SpaceAfterComma	true
SpaceAfterSemicolon	true
IndentOnTryWith	false
ReorderOpenDeclaration	false
SpaceAroundDelimiter	true
StrictMode	false

[nojaf]

Hi, I have a fix for this in 112452e.
However, I'm not 100% sure I covered all the possible cases here.
Let me know if you find scenarios where it is still a problem.