Moving a constant variable results in a copy occurring instead. This
looks to have been an accidental change as part of ea937b304d.
A few tools will warn about this:
`Warning C26478 Don't use std::move on constant variables. (es.56)`
`Warning cpp:S5415 "std::move" should not be called on a const object.`
Pull Request: https://projects.blender.org/blender/blender/pulls/121063