chore: Prepare for Rust edition bump to 2024 (without autofix) (#27791)

Successor to #27779 - in this PR I've applied changes manually, without
futzing with if let lifetimes at all.

Release Notes:

- N/A

crates/project/src/project.rs

@@ -4595,7 +4595,7 @@ impl Project {
             ProjectClientState::Shared { .. } | ProjectClientState::Local => {
                 return Task::ready(Err(anyhow!(
                     "can't synchronize remote buffers on a local project"
-                )))
+                )));
             }
         };