fix (ai): expose ai/mcp-stdio (#5288)

Co-authored-by: Kit Burgess <33626692+KitBurgess@users.noreply.github.com>

Author: lgrammel

.changeset/kind-socks-sleep.md

@@ -0,0 +1,5 @@
+---
+'ai': patch
+---
+
+fix (ai): expose ai/mcp-stdio

packages/ai/package.json

@@ -9,6 +9,7 @@
   "types": "./dist/index.d.ts",
   "files": [
     "dist/**/*",
+    "mcp-stdio/**/*",
     "react/dist/**/*",
     "rsc/dist/**/*",
     "test/dist/**/*",
@@ -120,4 +121,4 @@
     "next",
     "nextjs"
   ]
-}
+}