Fixing doc build

[germa89]

I have seen this error in doc builds:

../../examples/00-mapdl-examples/exhaust_manifold_thermal_stress.py unexpectedly failed to execute correctly:

    Traceback (most recent call last):
      File "/home/runner/work/pymapdl/pymapdl/examples/00-mapdl-examples/exhaust_manifold_thermal_stress.py", line 164, in <module>
        mapdl.post_processing.plot_nodal_eqv_stress()  # Plot equivalent stress
      File "/opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/ansys/mapdl/core/post.py", line 2072, in plot_nodal_eqv_stress
        return self._plot_point_scalars(
      File "/opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/ansys/mapdl/core/post.py", line 606, in _plot_point_scalars
        surf = self._mapdl.mesh._surf
      File "/opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/ansys/mapdl/core/mesh_grpc.py", line 76, in _surf
        self._surf_cache = self._grid.extract_surface()
      File "/opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/ansys/mapdl/core/misc.py", line 1116, in wrapper
        return function(self, *args, **kwargs)
      File "/opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/ansys/mapdl/core/mesh_grpc.py", line 716, in _grid
        self._grid_cache = self._parse_vtk(force_linear=True)
      File "/opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/ansys/mapdl/core/mesh_grpc.py", line 783, in _parse_vtk
        return _parse_vtk(
      File "/opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/ansys/mapdl/core/mesh/mesh.py", line 172, in _parse_vtk
        for key, item in mesh.element_components.items():
      File "/opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/ansys/mapdl/core/mesh_grpc.py", line 326, in element_components
        return self._mapdl.components._get_all_components_type("ELEM")
      File "/opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/ansys/mapdl/core/component.py", line 511, in _get_all_components_type
        item = self.__getitem__(each_comp)
      File "/opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/ansys/mapdl/core/component.py", line 311, in __getitem__
        output = self._mapdl._parse_cmlist_indiv(key, cmtype)
      File "/opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/ansys/mapdl/core/mapdl.py", line 5021, in _parse_cmlist_indiv
        items = [int(each) for each in items]
      File "/opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/ansys/mapdl/core/mapdl.py", line 5021, in <listcomp>
        items = [int(each) for each in items]
    ValueError: invalid literal for int() with base 10: '*****MAPDL'

This PR fix that issue.

[ansys-reviewer-bot]

Thanks for opening a Pull Request. If you want to perform a review write a comment saying:

@ansys-reviewer-bot review

[germa89]

LGTM

[pyansys-ci-bot]

✅ Approving this PR because germa89 said so in here 😬

[codecov]

Codecov Report

Merging #2570 (f3ad8e4) into main (00d49f6) will decrease coverage by 0.05%.
Report is 1 commits behind head on main.
The diff coverage is n/a.

❗ Current head f3ad8e4 differs from pull request most recent head 4db0bac. Consider uploading reports for the commit 4db0bac to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2570      +/-   ##
==========================================
- Coverage   82.52%   82.48%   -0.05%     
==========================================
  Files          44       44              
  Lines        9054     9048       -6     
==========================================
- Hits         7472     7463       -9     
- Misses       1582     1585       +3     

[germa89]

Closing because merged in #2558