fix(GRO-1350): use explicit tsconfig path in packages/types build

tsc without --project flag fails to find tsconfig.json when run from
a nested package directory inside a Docker COPY layer that overlays
files after deps install. Use explicit --project . to ensure tsc
finds the local tsconfig.json regardless of working directory context.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

packages/types/package.json

@@ -12,7 +12,7 @@
     }
   },
   "scripts": {
-    "build": "tsc",
+    "build": "tsc --project .",
     "typecheck": "tsc --noEmit"
   },
   "devDependencies": {