Merge topic 'webgpu-nested-actors-and-viewports'

46de0f48 Remove unused function in vtkWebGPURenderer.h
2d68aafc Add unit test for vtkAxesActor in webgpu
6a87a600 Remove OpenGL2 dependency from InteractionWidgets module
0080c064 Fix viewport rectangles in vtkWebGPURenderer
5d8674e2 Fix lower bounds for webgpu scissor rectangle
eb240125 webgpu: Flip Y coordinate in framebuffer coordinates
87650a6b Rename vtkWebGPURenderer::BundleInvalidated to RebuildRenderBundle
a877f670 Use render bundle per vtkRenderer
...

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Merge-request: !11725