[Bug]: [google-cloud/storage] isolate start time take a long time after using NPM

### Problem description

Before using NPM [@google-cloud/storage](https://www.npmjs.com/package/@google-cloud/storage), the load time was very fast.

After using NPM, the load takes a long time. More than 1 second.

Is there any info to solve it?

### Steps to reproduce

just include npm specifier on `deps.ts` file.

```ts
export { Storage } from "npm:@google-cloud/storage@7.0.1";
```

### Expected behavior

Loading times are still fast when using npm specifier.

### Environment

_No response_

### Possible solution

_No response_

### Additional context

_No response_