filter problematic scala 3 cross macro from scalafmt

Author: bishabosha

.scalafmt.conf

@@ -21,3 +21,9 @@ newlines.source = keep
 project.git = true
 
 runner.dialect = scala3
+
+project {
+  excludePaths = [
+    "glob:**/main/define/src/mill/define/Cross.scala"
+  ]
+}