Maybe change name of @x_helper

I think the statement signals a block as a virtual type, as discussed here: https://github.com/beyond-all-reason/RecoilEngine/pull/2480#discussion_r2217093902

Since @x_helper is a very obscure identifier, it should probably be changed to something more descriptive.

Start with the discussion in pull request 2480 and search the repository for @x_helper to locate its definition and uses. Determine a more descriptive name from the surrounding context, update all references, and run the relevant project tests to confirm the rename is complete.

Written by the indexing model from the issue text.