fix(Script): allow passing defer=false to Script component (#34850)

## Bug

```jsx
<Script
  async
  defer={false}
  strategy='beforeInteractive'
  src='https://securepubads.g.doubleclick.net/tag/js/gpt.js'
/>
```

output:

```html
<script src="https://securepubads.g.doubleclick.net/tag/js/gpt.js" async="" defer="" data-nscript="beforeInteractive"></script>
```

The `defer` prop is overridden by `!disableOptimizedLoading`, so can't disable it on the particular script.

packages/next/pages/_document.tsx

@@ -81,7 +81,7 @@ function getPreNextScripts(context: HtmlProps, props: OriginProps) {
         <script
           {...scriptProps}
           key={scriptProps.src || index}
-          defer={!disableOptimizedLoading}
+          defer={scriptProps.defer ?? !disableOptimizedLoading}
           nonce={props.nonce}
           data-nscript="beforeInteractive"
           crossOrigin={props.crossOrigin || crossOrigin}