[ty] don't allow first-party code to shadow stdlib types module (#19128)

crates/ty_python_semantic/tests/corpus.rs

@@ -116,13 +116,6 @@ fn run_corpus_tests(pattern: &str) -> anyhow::Result<()> {
             .with_context(|| format!("Failed to read test file: {path}"))?;
 
         let mut check_with_file_name = |path: &SystemPath| {
-            if relative_path.file_name() == Some("types.pyi") {
-                println!(
-                    "Skipping {relative_path:?}: paths with `types.pyi` as their final segment cause a stack overflow"
-                );
-                return;
-            }
-
             db.memory_file_system().write_file_all(path, &code).unwrap();
             File::sync_path(&mut db, path);