Dune site (without plugins) forces -linkall

[sim642]

Expected Behavior

-linkall is not forced when not necessary. As far as I understand, dune sites (without any plugins) do not actually need to force it because there's no dynamic loading/linking happening.
Correct me if I'm wrong, but manually doing the final executable step to remove -linkall still works fine because as long as the generated dune_site__Dune_site_data.cmx is explicitly linked. -linkall is not necessary for just the data.

Actual Behavior

This code seems to be responsible for forcing -linkall when dune site is in use:

dune/src/dune_rules/link_time_code_gen.ml

Lines 305 to 325 in 098117d

	| Dune_site { data_module; plugins } ->
	let code =
	Action_builder.of_memo
	@@ Memo.of_thunk
	@@ fun () ->
	if plugins then dune_site_plugin_code else Memo.return (dune_site_code ())
	in
	let& module_ =
	generate_and_compile_module
	cctx
	~obj_name:None
	~name:data_module
	~lib
	~code
	~requires:(Resolve.Memo.return [ lib ])
	~precompiled_cmi:true
	in
	process_libs
	libs
	~to_link_rev:(Lib lib :: Module (obj_dir, module_) :: to_link_rev)
	~force_linkall:true))

Notably, #4348 added the forcing, but it even happens when dune plugins are not used, only sites.

Specifications

• Version of dune (output of dune --version): 3.16.0
• Version of ocaml (output of ocamlc --version): 4.14.2
• Operating system (distribution and version): Ubuntu 22.04