HDRenderPipeline: Fix issue with influence Mask not setup to the correct value

ScriptableRenderPipeline/HDRenderPipeline/Material/Lit/LitData.hlsl

     #ifdef _INFLUENCEMASK_MAP
     float influenceMask = GetInfluenceMask(layerTexCoord);
     #else
-    float influenceMask = 0.0;
+    float influenceMask = 1.0;
     #endif
 
     if (influenceMask > 0.0f)