fix: Don't reference WebGPU enums on global level (#2357)

Author: ibgreen

modules/webgpu/src/adapter/resources/webgpu-pipeline-layout.ts

@@ -6,8 +6,6 @@ import {
 } from '@luma.gl/core';
 import {WebGPUDevice} from '../webgpu-device';
 
-const VISIBILITY_ALL = GPUShaderStage.VERTEX | GPUShaderStage.FRAGMENT | GPUShaderStage.COMPUTE;
-
 export class WebGPUPipelineLayout extends PipelineLayout {
   device: WebGPUDevice;
   handle: GPUPipelineLayout;
@@ -107,6 +105,9 @@ export class WebGPUPipelineLayout extends PipelineLayout {
         }
       }
 
+      const VISIBILITY_ALL =
+        GPUShaderStage.VERTEX | GPUShaderStage.FRAGMENT | GPUShaderStage.COMPUTE;
+
       bindGroupEntries.push({
         binding: binding.location,
         visibility: binding.visibility || VISIBILITY_ALL,