StandardInput cannot be inside LightweightLighting or it may cause errors with other standard shaders.

ScriptableRenderPipeline/LightweightPipeline/Shaders/LightweightCore.cginc

 #define LIGHTWEIGHT_PIPELINE_CORE_INCLUDED
 
 #include "UnityCG.cginc"
-#include "UnityStandardInput.cginc"
 
 #define MAX_VISIBLE_LIGHTS 16
 

ScriptableRenderPipeline/LightweightPipeline/Shaders/LightweightStandard.shader

 
             #pragma vertex LitPassVertex
             #pragma fragment LitPassFragment
+            #include "UnityStandardInput.cginc"
             #include "LightweightPassLit.cginc"
             ENDCG
         }

ScriptableRenderPipeline/LightweightPipeline/Shaders/LightweightStandardSimpleLighting.shader

 
             #pragma vertex LitPassVertex
             #pragma fragment LitPassFragmentSimple
+            #include "UnityStandardInput.cginc"
             #include "LightweightPassLit.cginc"
             ENDCG
         }