fix: do not pass legacyBehaviour to a as prop (#37306)

Fixes #37248

## Bug

- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`

## Feature

- [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have helpful link attached, see `contributing.md`

## Documentation / Examples

- [ ] Make sure the linting passes by running `pnpm lint`
- [ ] The examples guidelines are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples)

packages/next/client/link.tsx

@@ -127,9 +127,6 @@ type LinkPropsReal = React.PropsWithChildren<
 
 const Link = React.forwardRef<HTMLAnchorElement, LinkPropsReal>(
  function LinkComponent(props, forwardedRef) {
- const {
- legacyBehavior = Boolean(process.env.__NEXT_NEW_LINK_BEHAVIOR) !== true,
- } = props
  if (process.env.NODE_ENV !== 'production') {
  function createPropError(args: {
  key: string
@@ -260,6 +257,7 @@ const Link = React.forwardRef<HTMLAnchorElement, LinkPropsReal>(
  locale,
  onClick,
  onMouseEnter,
+ legacyBehavior = Boolean(process.env.__NEXT_NEW_LINK_BEHAVIOR) !== true,
  ...restProps
  } = props