fix: revert, "fix: resolve pnpm .modules.yaml from workspace root instead of cwd (#22757)"

This reverts commit 2531ac7.

Author: sapphi-red

packages/vite/src/node/server/index.ts

@@ -1220,13 +1220,12 @@ export async function resolveServerOptions(
 
   setupHmrWsOptionCompat(_server)
 
-  const workspaceRoot = searchForWorkspaceRoot(root)
   const server: ResolvedServerOptions = {
     ..._server,
     fs: {
       ..._server.fs,
       // run searchForWorkspaceRoot only if needed
-      allow: raw?.fs?.allow ?? [workspaceRoot],
+      allow: raw?.fs?.allow ?? [searchForWorkspaceRoot(root)],
     },
     sourcemapIgnoreList:
       _server.sourcemapIgnoreList === false
@@ -1264,13 +1263,7 @@ export async function resolveServerOptions(
   // Read node_modules/.modules.yaml which pnpm always writes on install — this works
   // unconditionally regardless of how Vite is launched (node / npx / pnpm run),
   // avoiding the need for subprocess calls or user-agent sniffing.
-  // Use workspace root (not package root) because .modules.yaml lives at the
-  // monorepo root's node_modules/, not in nested workspace packages.
-  const pnpmModulesYaml = path.join(
-    workspaceRoot,
-    'node_modules',
-    '.modules.yaml',
-  )
+  const pnpmModulesYaml = path.join(cwd, 'node_modules', '.modules.yaml')
   try {
     const content = fs.readFileSync(pnpmModulesYaml, 'utf-8')
     const parsed = JSON.parse(content)
@@ -1280,10 +1273,7 @@ export async function resolveServerOptions(
         allowDirs.push(virtualStoreDir)
       } else if (virtualStoreDir.startsWith('..')) {
         allowDirs.push(
-          path.resolve(
-            path.join(workspaceRoot, 'node_modules'),
-            virtualStoreDir,
-          ),
+          path.resolve(path.join(cwd, 'node_modules'), virtualStoreDir),
         )
       }
     }