Don't lookup JSON files in `baseUrl` (#70070)
Closes PACK-3123
Closes #66835
`baseUrl` has this odd behavior where it does **not** apply to JSON file
imports.
`ResolveModules::Path` is currently only used for `baseUrl`.
Either:
- we document that this is the behavior of `ResolveModules::Path`
- or introduce some additional enum variant
`ResolveModules::PathExceptJson`
- or add an extension exclusion list to
`ResolveModules::Path(Vc<FileSystemPath>, Vc<IndexSet<RcStr>>)`
---
Here you can see that `tsc --traceResolution` doesn't look at
`hypertune-nextjs-turbo-error/hypertune.json`:
```
======== Resolving module 'hypertune' from '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/src/app/page.tsx'. ========
Explicitly specified module resolution kind: 'Bundler'.
Resolving in CJS mode with conditions 'import', 'types'.
'baseUrl' option is set to '/Users/niklas/Desktop/hypertune-nextjs-turbo-error', using this value to resolve non-relative module name 'hypertune'.
Resolving module name 'hypertune' relative to base url '/Users/niklas/Desktop/hypertune-nextjs-turbo-error' - '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/hypertune'.
Loading module as file / folder, candidate module location '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/hypertune', target file types: TypeScript, JavaScript, Declaration, JSON.
File '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/hypertune.ts' does not exist.
File '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/hypertune.tsx' does not exist.
File '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/hypertune.d.ts' does not exist.
File '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/hypertune.js' does not exist.
File '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/hypertune.jsx' does not exist.
Directory '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/hypertune' does not exist, skipping all lookups in it.
File '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/src/app/package.json' does not exist.
File '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/src/package.json' does not exist.
Found 'package.json' at '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/package.json'.
Loading module 'hypertune' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.
Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
Directory '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/src/app/node_modules' does not exist, skipping all lookups in it.
Directory '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/src/node_modules' does not exist, skipping all lookups in it.
Found 'package.json' at '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/node_modules/hypertune/package.json'.
File '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/node_modules/hypertune.ts' does not exist.
File '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/node_modules/hypertune.tsx' does not exist.
File '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/node_modules/hypertune.d.ts' does not exist.
'package.json' does not have a 'typesVersions' field.
'package.json' does not have a 'typings' field.
'package.json' has 'types' field './dist/index.d.ts' that references '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/node_modules/hypertune/dist/index.d.ts'.
File '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/node_modules/hypertune/dist/index.d.ts' exists - use it as a name resolution result.
Resolving real path for '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/node_modules/hypertune/dist/index.d.ts', result '/Users/niklas/Desktop/hypertune-nextjs-turbo-error/node_modules/.pnpm/hypertune@2.5.2/node_modules/hypertune/dist/index.d.ts'.
```
