Enabled autogenerat GI flag to properly generate graphics test template image.

Tests/GraphicsTests/RenderPipeline/LightweightPipeline/Scenes/026_Shader_PBRscene.unity

   m_ReflectionIntensity: 1
   m_CustomReflection: {fileID: 0}
   m_Sun: {fileID: 0}
-  m_IndirectSpecularColor: {r: 0.5423998, g: 0.4884503, b: 0.49538776, a: 1}
+  m_IndirectSpecularColor: {r: 0.54236203, g: 0.4884355, b: 0.49545544, a: 1}
-  m_GIWorkflowMode: 1
+  m_GIWorkflowMode: 0
   m_GISettings:
     serializedVersion: 2
     m_BounceScale: 1