Add __all__ for modules beginning with 'h' and 'i' (#7327)

stdlib/hashlib.pyi

@@ -3,6 +3,27 @@ from _typeshed import ReadableBuffer, Self
 from typing import AbstractSet
 from typing_extensions import final
 
+__all__ = (
+    "md5",
+    "sha1",
+    "sha224",
+    "sha256",
+    "sha384",
+    "sha512",
+    "blake2b",
+    "blake2s",
+    "sha3_224",
+    "sha3_256",
+    "sha3_384",
+    "sha3_512",
+    "shake_128",
+    "shake_256",
+    "new",
+    "algorithms_guaranteed",
+    "algorithms_available",
+    "pbkdf2_hmac",
+)
+
 class _Hash:
     @property
     def digest_size(self) -> int: ...