fix typing

src/textual/render.py

@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from rich.console import Console, RenderableType
 from rich.protocol import rich_cast
 
@@ -7,7 +9,7 @@ def measure(
     renderable: RenderableType,
     default: int,
     *,
-    container_width: int | None = None
+    container_width: int | None = None,
 ) -> int:
     """Measure a rich renderable.
 

tests/snapshot_tests/test_snapshots.py

@@ -193,8 +193,3 @@ def test_demo(snap_compare):
         press=["down", "down", "down", "_", "_", "_"],
         terminal_size=(100, 30),
     )
-
-
-def test_label_wrap(snap_compare):
-    """Test Label wrapping with a Panel"""
-    assert snap_compare("snapshot_apps/label_wrap.py")