enable_outside_detected_project=true for rpc

[kohlivarun5]

The rpc api doesn't allow for enabling ocamlformat outside detected project.
In situations where we want the editor (ocaml-lsp) to respect the global config (in ~/.config/.ocamlformat), it is useful to enable formatting without having a .ocamlformat in the project

This change enables it for rpc, with the assumption that if a client is triggering the rpc explicitly for formatting, they expect it to be picked up

Related to #2092

[Julow]

The lsp doesn't know whether formatting should be enabled or not and this will format files that shouldn't be in projects that do not use ocamlformat.

false is the right default for now as we decided not to implement #2092 yet (related #2439).
Instead, this should be an option that the lsp could be configured to pass or the lsp could handle specially projects that do not have a .ocamlformat.

[kohlivarun5]

Instead, this should be an option that the lsp could be configured to pass or the lsp could handle specially projects that do not have a .ocamlformat.

Is it possible for the lsp to control this on the client side ?
My understanding of the code was that this option is not exposed and just hard-coded

[Julow]

The lsp cannot pass this option at the moment and that's what we should fix.