[next] use tsconfig.build.json for production build (#76373)

### Why?

The types of unit tests and stories were included in the package.
Exclude them by using `tsconfig.declaration.json` when `pnpm run types`
during production build.

| Before | After |
|--------|--------|
| ![CleanShot 2025-02-22 at 18 53
43@2x](https://github.com/user-attachments/assets/4e926395-4c53-4d82-aaf9-e7aa03124294)
| ![CleanShot 2025-02-22 at 19 09
37@2x](https://github.com/user-attachments/assets/9a4d3fbc-f5b8-421e-9cb5-d8d0aa1d7509)
|

Closes NDX-747

---------

Co-authored-by: Sebastian Sebbie Silbermann <sebastian.silbermann@vercel.com>

packages/next/package.json

@@ -84,7 +84,7 @@
     "release": "taskr release",
     "build": "pnpm release",
     "prepublishOnly": "cd ../../ && turbo run build",
-    "types": "tsc --declaration --emitDeclarationOnly --stripInternal --declarationDir dist",
+    "types": "tsc --project tsconfig.build.json --declaration --emitDeclarationOnly --stripInternal --declarationDir dist",
     "typescript": "tsec --noEmit",
     "ncc-compiled": "taskr ncc",
     "storybook": "storybook dev -p 6006",

packages/next/taskfile.js

@@ -2573,14 +2573,14 @@ export async function nextbuildjest(task, opts) {
 
 export async function client(task, opts) {
   await task
-    .source('src/client/**/!(*.test).+(js|ts|tsx|woff2)')
+    .source('src/client/**/!(*.test|*.stories).+(js|ts|tsx|woff2)')
     .swc('client', { dev: opts.dev, interopClientDefaultExport: true })
     .target('dist/client')
 }
 
 export async function client_esm(task, opts) {
   await task
-    .source('src/client/**/!(*.test).+(js|ts|tsx|woff2)')
+    .source('src/client/**/!(*.test|*.stories).+(js|ts|tsx|woff2)')
     .swc('client', { dev: opts.dev, esm: true })
     .target('dist/esm/client')
 }

packages/next/tsconfig.build.json

@@ -0,0 +1,20 @@
+{
+  "extends": "./tsconfig.json",
+  // Copied from tsconfig.json to not overwrite.
+  "exclude": [
+    "dist",
+    "./*.d.ts",
+    "future/*.d.ts",
+    "image-types/global.d.ts",
+    "compat/*.d.ts",
+    "legacy/*.d.ts",
+    "types/compiled.d.ts",
+    "navigation-types/*.d.ts",
+    "navigation-types/compat/*.d.ts",
+    "experimental/**/*.d.ts",
+    // Don't generate types for internal files.
+    "./**/*.test.ts",
+    "./**/*.test.tsx",
+    "./**/*.stories.tsx"
+  ]
+}

packages/next/tsconfig.json

@@ -10,6 +10,8 @@
     "target": "ES2018",
     "moduleResolution": "node"
   },
+  // When changing `exclude`, also update
+  // `tsconfig.build.json`.
   "exclude": [
     "dist",
     "./*.d.ts",