Consistency checking on `dep_group`

[XuJiandong]

Consistency checking fails on tx.json when there is any dep_group. Examples:

{
  "mock_info": {
    "cell_deps": [
      {
        "cell_dep": {
          "out_point": {
            "tx_hash": "0xe2fb199810d49a4d8beec56718ba2593b665db9d52299a0f9e6e75416d73ff5c",
            "index": "0x3"
          },
          "dep_type": "code"
        }
      },
      {
        "cell_dep": {
          "out_point": {
            "tx_hash": "0xe2fb199810d49a4d8beec56718ba2593b665db9d52299a0f9e6e75416d73ff5c",
            "index": "0x1"
          },
          "dep_type": "code"
        },
      },
      {
        "cell_dep": {
          "out_point": {
            "tx_hash": "0x71a7ba8fc96349fea0ed3a5c47992e3b4084b031a42264a018e0072e8172e46c",
            "index": "0x0"
          },
          "dep_type": "dep_group"
        },
      
      },
      {
        "cell_dep": {
          "out_point": {
            "tx_hash": "0x584ddf4379ae4fc87a435162c77faf9bbd55e5704f7ffbdcfa5052ed81f6770f",
            "index": "0x1"
          },
          "dep_type": "code"
        },
        
      }
    ],
    "header_deps": []
  },
  "tx": {
    "version": "0x0",
    "cell_deps": [
      {
        "out_point": {
          "tx_hash": "0x71a7ba8fc96349fea0ed3a5c47992e3b4084b031a42264a018e0072e8172e46c",
          "index": "0x0"
        },
        "dep_type": "dep_group"
      },
      {
        "out_point": {
          "tx_hash": "0x584ddf4379ae4fc87a435162c77faf9bbd55e5704f7ffbdcfa5052ed81f6770f",
          "index": "0x1"
        },
        "dep_type": "code"
      }
    ],
    "header_deps": [],
    "inputs": [
      {
        "since": "0x0",
        "previous_output": {
          "tx_hash": "0x129c00d14dfc2180df01382d9313692642c731bcdab75ff9b43cfb2291fd9555",
          "index": "0x0"
        }
      },
      {
        "since": "0x0",
        "previous_output": {
          "tx_hash": "0x7a3ee6010411ab3f314e094abf0be15d6add8f0b56d80c4431fc9b465f329e5b",
          "index": "0x1"
        }
      }
    ],
    "outputs": [
      {
        "capacity": "0x35a4e9000",
        "lock": {
          "code_hash": "0x9bd7e06f3ecf4be0f2fcd2188b23f1b9fcc88e5d4b65a8637b17723bbda3cce8",
          "hash_type": "type",
          "args": "0x3c2c45d0def478183ce14337d21bf55fa2308e03"
        },
        "type": {
          "code_hash": "0x8b9cf1c536c2590282c2896ca34778590a3784b7daeafa241fe98e170a743ee0",
          "hash_type": "data",
          "args": "0x937602c81c5e6628e1ff615a91727daa2f6dbded304a5629b78e36e137ec3ee9"
        }
      },
      {
        "capacity": "0x48a1ef9d10",
        "lock": {
          "code_hash": "0x9bd7e06f3ecf4be0f2fcd2188b23f1b9fcc88e5d4b65a8637b17723bbda3cce8",
          "hash_type": "type",
          "args": "0x3c2c45d0def478183ce14337d21bf55fa2308e03"
        },
        "type": null
      }
    ],
    "outputs_data": [
      "0x17000000984ced3318cf80c981010000",
      "0x"
    ],
    "witnesses": [
      "0x55000000100000005500000055000000410000001e657939f58f9ed8fc677f50a7c13538dafd1d60a88860bbe7dfe7dc3e92bfc557f393b0c2980491b63b2cac1367ef5a93379756e3dc6964cd015413288fb46a01",
      "0x"
    ]
  }
}