Always add a space for multiple curried args invocation

[janus]

Addresses dotnet/docs#28141

[nojaf]

Hello, thank you for this contribution.

Could you please first open an issue in Fantomas instead of adding a link to a PR to the docs.
This helps for the release notes later on.

Next, please target the 4.7 branch instead of the master.
As you could not have known this, I've added some additional notes in #2078.

[nojaf]

       | AppWithLambda (e, es, lpr, lambda, rpr, pr) ->

should be updated as well to reflect these changes.
Something like:

            let sepSpaceAfterFunctionName =
                let sepSpaceBasedOnSetting e =
                    match e with
                    | Paren _ -> sepSpace
                    | UppercaseSynExpr -> (fun ctx -> onlyIf ctx.Config.SpaceBeforeUppercaseInvocation sepSpace ctx)
                    | LowercaseSynExpr -> (fun ctx -> onlyIf ctx.Config.SpaceBeforeLowercaseInvocation sepSpace ctx)

                match es with
                | [] -> sepSpaceBasedOnSetting e
                | _ -> sepSpace

[nojaf]

This test should not be in SingleExprTests.fs, a better candidate would be AppTests.fs.

[nojaf]

This is wrong, as soon as there are more than elements in es it should return true.
Unit test maintain indent if when condition is multiline should be updated as well.

[janus]

@nojaf
It returns true if there are at least two curried args. If this fails, it continues with old logic.

[nojaf]

There is no need for the old logic, that is my point.

[knocte]

Addressed comments in PR2088 (#2088) that supersedes this one.