test(fix[PaneSnapshot]): Specify capture_content flag in tests

why:
- The PaneSnapshot.from_pane() method was updated to better handle content capture
- Tests need to explicitly set capture_content=True to ensure content is captured

what:
- Updated TestPaneSnapshot.test_pane_snapshot_creation to explicitly set capture_content=True
- This ensures test behavior remains consistent with the updated PaneSnapshot implementation

refs: Complements the snapshot class refactoring

Author: tony

tests/test_snapshot.py

@@ -41,7 +41,7 @@ def test_pane_snapshot_creation(self, session: Session) -> None:
 
         # Create a snapshot - use patch to prevent actual sealing
         with patch.object(PaneSnapshot, "seal", return_value=None):
-            snapshot = PaneSnapshot.from_pane(pane)
+            snapshot = PaneSnapshot.from_pane(pane, capture_content=True)
 
         # Check that the snapshot is a sealable instance
         assert is_sealable(snapshot)