Fix backend loading path (#1464)

Author: nico-martin

src/backends/onnx.js

@@ -193,11 +193,13 @@ if (ONNX_ENV?.wasm) {
     // By default, we only do this if we are not in a service worker and the wasmPaths are not already set.
     if (
         // @ts-ignore Cannot find name 'ServiceWorkerGlobalScope'.ts(2304)
-        !(typeof ServiceWorkerGlobalScope !== 'undefined' && self instanceof ServiceWorkerGlobalScope) &&
-        env.backends.onnx.versions?.web &&
-        !ONNX_ENV.wasm.wasmPaths
+        (
+            !(typeof ServiceWorkerGlobalScope !== 'undefined' && self instanceof ServiceWorkerGlobalScope) &&
+            ONNX_ENV.versions?.web &&
+            !ONNX_ENV.wasm.wasmPaths
+        )
     ) {
-        const wasmPathPrefix = `https://cdn.jsdelivr.net/npm/onnxruntime-web@${env.backends.onnx.versions.web}/dist/`;
+        const wasmPathPrefix = `https://cdn.jsdelivr.net/npm/onnxruntime-web@${ONNX_ENV.versions.web}/dist/`;
 
         ONNX_ENV.wasm.wasmPaths = apis.IS_SAFARI
             ? {