dawn_node: Fix Converter<Napi::TypedArrayOf<T>>::FromJS

The conversion should only pass if the element type matches.

Bug: dawn:1123
Change-Id: I700a445e8d281afdc36d1b6f9be73767ca89d4ea
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/65240
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: Austin Eng <enga@chromium.org>

src/dawn_node/interop/Core.h

@@ -279,8 +279,8 @@ namespace wgpu { namespace interop {
                 auto arr = value.As<Napi::TypedArrayOf<T>>();
                 if (arr.TypedArrayType() == element_type) {
                     out = arr;
+                    return true;
                 }
-                return true;
             }
             return false;
         };