Support for USD 25.11

[RichardFrangenberg]

Describe the feature you'd like
Support for compiling Arnold against USD 25.11

Describe the solution you'd like
Fix all compile errors.

Additional context
When trying to compile Arnold 7.4.4.0 against USD 25.11 I get multiple errors, including this one:

D:\compiling\arnold-usd\USDs\OpenUSD25.11_Python3.13_Mtlx\include\pxr\imaging\hf\pluginRegistry.h(181,12): error C2259:
 'pxrInternal_v0_25_11__pxrReserved__::HdArnoldRendererPlugin': cannot instantiate abstract class [D:\compiling\arnold-
usd\builds\build_25.11_py313_7.4.4.0\build\plugins\render_delegate\hdArnoldObjects.vcxproj]
  (compiling source file '../../../../../repo/arnold-usd/plugins/render_delegate/renderer_plugin.cpp')
      D:\compiling\arnold-usd\repo\arnold-usd\plugins\render_delegate\renderer_plugin.h(46,7):
      see declaration of 'pxrInternal_v0_25_11__pxrReserved__::HdArnoldRendererPlugin'
      D:\compiling\arnold-usd\USDs\OpenUSD25.11_Python3.13_Mtlx\include\pxr\imaging\hf\pluginRegistry.h(181,12):
      due to following members:
      D:\compiling\arnold-usd\USDs\OpenUSD25.11_Python3.13_Mtlx\include\pxr\imaging\hf\pluginRegistry.h(181,12):
      'bool pxrInternal_v0_25_11__pxrReserved__::HdRendererPlugin::IsSupported(const pxrInternal_v0_25_11__pxrReserved_
  _::HdRendererCreateArgs &,std::string *) const': is abstract
      D:\compiling\arnold-usd\USDs\OpenUSD25.11_Python3.13_Mtlx\include\pxr\imaging\hd\rendererPlugin.h(77,18):
      see declaration of 'pxrInternal_v0_25_11__pxrReserved__::HdRendererPlugin::IsSupported'

[autodesk-oss-arnold-bot]

Issue synced internally to ARNOLD-17065

[cpichard]

Hi @RichardFrangenberg , we'll look into this very soon, we'll keep you posted.
Thanks