layers: Fix PV extension pulling

The parameter validation layer needs this data...

Change-Id: I587ac3ac0ff753ea3e8255ac77da10167e617333
diff --git a/layers/parameter_validation_utils.cpp b/layers/parameter_validation_utils.cpp
index 97f7fe0..5f6b4a9 100644
--- a/layers/parameter_validation_utils.cpp
+++ b/layers/parameter_validation_utils.cpp
@@ -197,6 +197,8 @@
         phys_dev_ext_props.mesh_shader_props = mesh_shader_props;
     }
 
+    stateless_validation->phys_dev_ext_props = this->phys_dev_ext_props;
+
     // Save app-enabled features in this device's validation object
     // The enabled features can come from either pEnabledFeatures, or from the pNext chain
     const VkPhysicalDeviceFeatures *enabled_features_found = pCreateInfo->pEnabledFeatures;