test: expect wpt/encoding/encodeInto.any.js to fail

Since we do not implement TextEncoder.prototype.encodeInto

PR-URL: https://github.com/nodejs/node/pull/27860
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

test/wpt/status/encoding.json

@@ -50,5 +50,8 @@
   },
   "streams/*.js": {
     "fail": "No implementation of TextDecoderStream and TextEncoderStream"
+  },
+  "encodeInto.any.js": {
+    "fail": "TextEncoder.prototype.encodeInto not implemented"
   }
 }