Fix CI failures: lint, invalid -X flag, and missing Makefile TESTSUBDIRS

- Remove trailing newlines from empty __init__.py files to satisfy pre-commit hooks
- Fix test_fails_without_lazy to not pass invalid -X lazy_imports=none flag
- Add 14 new test data directories to TESTSUBDIRS in Makefile.pre.in

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: brittanyrey

Lib/test/test_lazy_import/__init__.py

@@ -2268,7 +2268,7 @@ def test_succeeds_with_lazy(self):
     def test_fails_without_lazy(self):
         """Same-level circular imports should fail without lazy mode."""
         result = subprocess.run(
-            [sys.executable, "-X", "lazy_imports=none", "-c",
+            [sys.executable, "-c",
              "import test.test_lazy_import.data.circular_import_pkg.main"],
             capture_output=True, text=True,
         )

Lib/test/test_lazy_import/data/circular_import_pkg/__init__.py

@@ -1 +0,0 @@
-

Lib/test/test_lazy_import/data/metasyntactic/__init__.py

@@ -1 +0,0 @@
-

Makefile.pre.in

@@ -2671,6 +2671,20 @@ TESTSUBDIRS=	idlelib/idle_test \
 		test/test_lazy_import/data \
 		test/test_lazy_import/data/pkg \
 		test/test_lazy_import/data/badsyntax \
+		test/test_lazy_import/data/circular_import_pkg \
+		test/test_lazy_import/data/metasyntactic \
+		test/test_lazy_import/data/metasyntactic/foo \
+		test/test_lazy_import/data/metasyntactic/foo/ack \
+		test/test_lazy_import/data/metasyntactic/foo/bar \
+		test/test_lazy_import/data/metasyntactic/foo/bar/baz \
+		test/test_lazy_import/data/metasyntactic/foo/bar/baz/qux \
+		test/test_lazy_import/data/metasyntactic/foo/bar/thud \
+		test/test_lazy_import/data/metasyntactic/plugh \
+		test/test_lazy_import/data/metasyntactic/waldo \
+		test/test_lazy_import/data/metasyntactic/waldo/fred \
+		test/test_lazy_import/data/module_same_name_var_order1 \
+		test/test_lazy_import/data/module_same_name_var_order2 \
+		test/test_lazy_import/data/versioned \
 		test/test_module \
 		test/test_multiprocessing_fork \
 		test/test_multiprocessing_forkserver \