Do not access private _namedtuple member from pyvista (#1219)

* Do not access `_namedtuple`

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* Update core.py

* Update core.py

* Update core.py

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

src/geovista/core.py

@@ -19,6 +19,7 @@
 import warnings
 
 import lazy_loader as lazy
+import pyvista as pv
 
 from .common import (
     CENTRAL_MERIDIAN,
@@ -375,7 +376,9 @@ def combine(
         common_point_data = set(first.point_data.keys())
         common_cell_data = set(first.cell_data.keys())
         common_field_data = set(first.field_data.keys())
-        active_scalars_info = {first.active_scalars_info._namedtuple}  # noqa: SLF001
+        active_scalars_info = {
+            pv.core.dataset.ActiveArrayInfoTuple(*first.active_scalars_info)
+        }
 
     for i, mesh in enumerate(meshes):
         if not isinstance(mesh, pv.PolyData):
@@ -425,7 +428,9 @@ def combine(
             common_cell_data &= set(mesh.cell_data.keys())
             common_field_data &= set(mesh.field_data.keys())
             if mesh.active_scalars_name:
-                active_scalars_info &= {mesh.active_scalars_info._namedtuple}  # noqa: SLF001
+                active_scalars_info &= {
+                    pv.core.dataset.ActiveArrayInfoTuple(*mesh.active_scalars_info)
+                }
 
     points = np.vstack(combined_points)
     faces = np.hstack(combined_faces)