fix: resolve mypy "Name _ already defined" error in registry.py

Replace three `from X import support as _` patterns with a loop using
`importlib.import_module()`, eliminating the duplicate name binding.

Co-authored-by: Kevin Turcios <KRRT7@users.noreply.github.com>

Author: github-actions[bot]

codeflash/languages/registry.py

@@ -48,15 +48,15 @@ def _ensure_languages_registered() -> None:
     # Import support modules to trigger registration
     # These imports are deferred to avoid circular imports
     import contextlib
-
-    with contextlib.suppress(ImportError):
-        from codeflash.languages.python import support as _
-
-    with contextlib.suppress(ImportError):
-        from codeflash.languages.javascript import support as _
-
-    with contextlib.suppress(ImportError):
-        from codeflash.languages.java import support as _  # noqa: F401
+    import importlib
+
+    for _lang_module in (
+        "codeflash.languages.python.support",
+        "codeflash.languages.javascript.support",
+        "codeflash.languages.java.support",
+    ):
+        with contextlib.suppress(ImportError):
+            importlib.import_module(_lang_module)
 
     _languages_registered = True