[R4R]fix hot sync not a catched up status

[unclezoro]

Fix the issue that catching_up is still true when switch to hot sync.

After fix:

{
  "jsonrpc": "2.0",
  "id": "",
  "result": {
    "node_info": {
      "protocol_version": {
        "p2p": "7",
        "block": "10",
        "app": "0"
      },
      "id": "d522f296cba08a1bab820b6803b94b71d7dedabb",
      "listen_addr": "tcp://0.0.0.0:26659",
      "network": "bnbchain-1000",
      "version": "0.32.3",
      "channels": "36402021222330380041",
      "moniker": "testnode",
      "other": {
        "tx_index": "on",
        "rpc_address": "tcp://0.0.0.0:26667"
      }
    },
    "sync_info": {
      "latest_block_hash": "1FF42B5CDB40D77E04C6EBF1F2B7457621BB2CC3C4C6BA223F4AA3BC93E7CA58",
      "latest_app_hash": "47C73507768F6C78CC0C3158806621EE51E288DAAF6F158003A4F3C6966B1685",
      "latest_block_height": "987",
      "latest_block_time": "2020-07-13T11:55:35.364952Z",
      "catching_up": false,
      "index_height": "1043"
    },
    "validator_info": {
      "address": "82B9AC8A6D000F96BBCA4BE56355E91D79E937B7",
      "pub_key": {
        "type": "tendermint/PubKeyEd25519",
        "value": "nLSwuvGKlmULCGrq82ffYpAcPLhLa7sP838Pe2rPUGQ="
      },
      "voting_power": "0"
    }
  }
}