set fallback shaders

Assets/Unlit_WF_ShaderSuite/Shaders/Unlit_WF_UnToon_Outline_Opaque.shader

@@ -319,6 +319,7 @@ Shader "UnlitWF/UnToon_Outline/WF_UnToon_Outline_Opaque" {
             "RenderType" = "Opaque"
             "Queue" = "Geometry"
             "DisableBatching" = "True"
+            "VRCFallback" = "Toon"
         }
 
         Pass {

Assets/Unlit_WF_ShaderSuite/Shaders/Unlit_WF_UnToon_Outline_Transparent.shader

@@ -334,6 +334,7 @@ Shader "UnlitWF/UnToon_Outline/WF_UnToon_Outline_Transparent" {
             "RenderType" = "Transparent"
             "Queue" = "Transparent"
             "DisableBatching" = "True"
+            "VRCFallback" = "Toon"
         }
 
         GrabPass { "_UnToonOutlineCancel" }

Assets/Unlit_WF_ShaderSuite/Shaders/Unlit_WF_UnToon_Outline_Transparent_MaskOut.shader

@@ -338,6 +338,7 @@ Shader "UnlitWF/UnToon_Outline/WF_UnToon_Outline_Transparent_MaskOut" {
             "RenderType" = "Transparent"
             "Queue" = "Transparent+1"
             "DisableBatching" = "True"
+            "VRCFallback" = "Toon"
         }
 
         GrabPass { "_UnToonOutlineCancelLater" }

Assets/Unlit_WF_ShaderSuite/Shaders/Unlit_WF_UnToon_Transparent_Mask.shader

@@ -308,6 +308,7 @@ Shader "UnlitWF/WF_UnToon_Transparent_Mask" {
         Tags {
             "RenderType" = "Transparent"
             "Queue" = "Transparent"
+            "VRCFallback" = "Toon"
         }
 
         Pass {