project_panel: Fix create entry with trailing dot duplicating on windows (#44524)

Release Notes:

- Fixed an issue where creating a file through the project panel with a
trailing dot in its name would duplicate the entries with and without
the dot

Co-authored by: Smit Barmase <smit@zed.dev>

crates/languages/src/go.rs

@@ -73,7 +73,9 @@ impl LspInstaller for GoLspAdapter {
                     delegate.show_notification(NOTIFICATION_MESSAGE, cx);
                 })?
             }
-            anyhow::bail!("cannot install gopls");
+            anyhow::bail!(
+                "Could not install the Go language server `gopls`, because `go` was not found."
+            );
         }
 
         let release =