Add __all__ (#13704)

stubs/shapely/@tests/stubtest_allowlist.txt

@@ -1,6 +1,3 @@
-# TODO: missing from stub
-shapely._ragged_array.__all__
-
 shapely\.geometry\.conftest
 shapely\.tests.*
 

stubs/shapely/shapely/_ragged_array.pyi

@@ -10,3 +10,5 @@ def to_ragged_array(
 def from_ragged_array(
     geometry_type: GeometryType, coords: ArrayLike[float], offsets: ArrayLikeSeq[int] | None = None
 ) -> GeoArray: ...
+
+__all__ = ["to_ragged_array", "from_ragged_array"]