fix: disable npm auto-rebuild by setting gypfile:false

- npm automatically runs node-gyp rebuild when binding.gyp exists
- this fails on systems without build tools even when prebuilds are present
- setting gypfile:false disables this auto-detection

Author: rquast

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@sengac/tree-sitter-dart",
-  "version": "0.25.14",
+  "version": "1.1.6",
   "description": "Dart grammar attempt for tree-sitter",
   "repository": "https://github.com/sengac/tree-sitter-dart",
   "main": "bindings/node",
@@ -92,5 +92,6 @@
   ],
   "publishConfig": {
     "access": "public"
-  }
+  },
+  "gypfile": false
 }