Make ShellBuilder::new not branch on a remote shell (#39493)

Release Notes:

- Fixed claude code agent login on remotes

Co-authored-by: Max Brunsfeld <max@zed.dev>
Co-authored-by: Cole Miller <cole@zed.dev>

crates/project/src/debugger/locators/cargo.rs

@@ -117,7 +117,7 @@ impl DapLocator for CargoLocator {
             .cwd
             .clone()
             .context("Couldn't get cwd from debug config which is needed for locators")?;
-        let builder = ShellBuilder::new(None, &build_config.shell).non_interactive();
+        let builder = ShellBuilder::new(&build_config.shell).non_interactive();
         let (program, args) = builder.build(
             Some("cargo".into()),
             &build_config