Textures cannot be saved

[banesullivan]

Describe the bug, what's wrong, and what you expected.

the save() method on Texture objects fails.

see also #3119

Steps to reproduce the bug.

from pyvista import examples

tex = examples.load_globe_texture()
tex.save('~/Desktop/texture.png')

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
Input In [10], in <cell line: 1>()
----> 1 tex.save('~/Desktop/texture.png')

File ~/Software/pyvista/pyvista/pyvista/core/dataobject.py:125, in DataObject.save(self, filename, binary, texture)
    123 file_ext = file_path.suffix
    124 if file_ext not in self._WRITERS:
--> 125     raise ValueError(
    126         'Invalid file extension for this data type.'
    127         f' Must be one of: {self._WRITERS.keys()}'
    128     )
    130 # store complex and bitarray types as field data
    131 self._store_metadata()

ValueError: Invalid file extension for this data type. Must be one of: dict_keys([])

System Information

--------------------------------------------------------------------------------
  Date: Mon Aug 29 09:50:27 2022 MDT

                OS : Darwin
            CPU(s) : 16
           Machine : x86_64
      Architecture : 64bit
               RAM : 64.0 GiB
       Environment : Jupyter
       File system : apfs
        GPU Vendor : ATI Technologies Inc.
      GPU Renderer : AMD Radeon Pro 5500M OpenGL Engine
       GPU Version : 4.1 ATI-4.8.13

  Python 3.9.12 | packaged by conda-forge | (main, Mar 24 2022, 23:27:05)
  [Clang 12.0.1 ]

           pyvista : 0.37.dev0
               vtk : 9.1.0
             numpy : 1.22.3
           imageio : 2.19.1
           appdirs : 1.4.4
            scooby : 0.5.12
        matplotlib : 3.5.2
         pyvistaqt : 0.9.0
             PyQt5 : 5.15.7
           IPython : 8.3.0
          colorcet : 3.0.0
           cmocean : 2.0
        ipyvtklink : 0.2.2
             scipy : 1.8.1
              tqdm : 4.64.0
            meshio : 5.3.4
        jupyterlab : 3.4.3
         pythreejs : Version unknown
--------------------------------------------------------------------------------

Screenshots

No response