Context

Rollup_node_services is making Merlin confused, which in turns make OCaml LSP confused, which in turns annoys me (and others most probably).

Renaming feels a bit like giving up, but sometimes, refusing to fight is the best way to win.

Manually testing the MR

Alpha renaming.

Document the interface of any function added or modified (see the coding guidelines)
Document any change to the user interface, including configuration parameters (see node configuration)
Provide automatic testing (see the testing guide).
For new features and bug fixes, add an item in the appropriate changelog (docs/protocols/alpha.rst for the protocol and the environment, CHANGES.rst at the root of the repository for everything else).
Select suitable reviewers using the Reviewers field below.
Select as Assignee the next person who should take action on that MR