Auto-break on NonSemantic.DebugBreak instructions

* This is almost completely worthless as it seems at least NV and amdvlk both
  actually crash the GPU on this instruction, meaning there's no way to get it
  to the shader debugger. But on other drivers like radv, or maybe if this is
  fixed in future, this will be useful.
* For this reason it also can't be tested automatically.

qrenderdoc/Windows/ShaderViewer.cpp

@@ -2617,6 +2617,8 @@ void ShaderViewer::runTo(const rdcarray<uint32_t> &runToInstructions, bool forwa
   if(!m_Trace || m_States.empty())
     return;
 
+  condition |= ShaderEvents::DebugBreak;
+
   m_VariablesChanged.clear();
 
   bool firstStep = true;