Revert "Enable externalHelpers when pre compiling Next.js' code"

[ijjk]

This temporarily reverts the external helpers being used for building the next files as it seems to be triggering dynamic code evaluation errors still so we will need to investigate further.

Failed to compile.
--
13:11:06.874 |  
13:11:06.874 | ../node_modules/@swc/helpers/src/_is_native_function.js
13:11:06.874 | Dynamic Code Evaluation (e. g. 'eval', 'new Function', 'WebAssembly.compile') not allowed in Middleware middleware
13:11:06.875 | Used by default
13:11:06.875 |  
13:11:06.875 | Import trace for requested module:
13:11:06.875 | ../node_modules/@swc/helpers/src/index.js
13:11:06.875 | ../node_modules/next/dist/client/router.js
13:11:06.875 | ../node_modules/next/router.js

Reverts #37164

[SukkaW]

@ijjk

That's really weird. node_modules/@swc/helpers/src/index.js wouldn't be imported directly with the latest version of swc.

I have checked the pre-compiled files on my local machine, there is no trace of _is_native_function or _wrap_native_super being imported.

The only reason node_modules/@swc/helpers/src/index.js would be imported is that the local @swc/core version is outdated. This might have something to do with the pnpm though.