Update packed BitNet WASM fallback runtime

manifest.json

@@ -9402,9 +9402,12 @@
     "vocab_size": 8207
   },
   "runtime": {
-    "fallback": "wasm-simd-required",
+    "fallback": "wasm",
     "files": {
       "encdec_js": "runtime/encdec_runtime.js",
+      "wasm_binary": "runtime/model_stack_bitnet_wasm_bg.wasm",
+      "wasm_js": "runtime/model_stack_bitnet_wasm.js",
+      "wasm_runtime_js": "runtime/bitnet_wasm_runtime.js",
       "webgpu_js": "runtime/bitnet_webgpu.js",
       "wgsl": "runtime/bitnet_linear.wgsl"
     },
@@ -9426,4 +9429,4 @@
     "unk_token_id": 3,
     "vocab_size": 8207
   }
-}
+}