BIP-352: add test vector for exceeding K_max limit [sender side]

Test case: as the (only) recipient group contains 2325 addresses and
thus exceeds the K_max limit by one, sending fails.

Can be tested by
`$ ./bip-0352/reference.py ./bip-0352/send_and_receive_test_vectors.json`

Author: theStack

bip-0352/send_and_receive_test_vectors.json

@@ -3185,5 +3185,50 @@
                 }
             }
         ]
+    },
+    {
+        "comment": "Maximum per-group recipient limit K_max is exceeded (2325 matches): sending fails, receiver doesn't scan beyond limit",
+        "sending": [
+            {
+                "given": {
+                    "vin": [
+                        {
+                            "txid": "3cde0e7ad8adf24a4e52fd18efafffb94f73f4c7facf2627a5b588ad1c9db87f",
+                            "vout": 0,
+                            "scriptSig": "",
+                            "txinwitness": "01407ce01bc5ef2e4aae353e7f291fec32623d6a491b5421be6dccc70345f32ebae5baa6654c60c074e72da76fd06b343474370e56d3ec0413156ec6261757125ad4",
+                            "prevout": {
+                                "scriptPubKey": {
+                                    "hex": "5120bca87f72e604e8850064552bedf380ca4584227057efe12a6cc238470658aaa3"
+                                }
+                            },
+                            "private_key": "0000000000000000000000000000000000000000000000000000000000001337"
+                        }
+                    ],
+                    "recipients": [
+                        {
+                            "address": "sp1qqtnvg7hxjck9ag24naytgd7pjwsmevwh95ydwht58w3uh7uw0ta7kqmk4a3pm24z0yepw6aw27pku56md0hq5ace0l3p3jstkqaajwrsjqc5dde5",
+                            "scan_pub_key": "02e6c47ae6962c5ea1559f48b437c193a1bcb1d72d08d75d743ba3cbfb8e7afbeb",
+                            "spend_pub_key": "0376af621daaa27932176bae57836e535b6bee0a77197fe218ca0bb03bd9387090",
+                            "count": 2325
+                        }
+                    ]
+                },
+                "expected": {
+                    "outputs": [
+                        []
+                    ],
+                    "shared_secrets": [
+                        null
+                    ],
+                    "input_private_key_sum": "0000000000000000000000000000000000000000000000000000000000001337",
+                    "input_pub_keys": [
+                        "02bca87f72e604e8850064552bedf380ca4584227057efe12a6cc238470658aaa3"
+                    ]
+                }
+            }
+        ],
+        "receiving": [
+        ]
     }
 ]