message: Update ts-checker 3->6: flow state TS fix
diff: @@ -52,6 +52,7 @@ class Flow {
  utxoScriptValues?: any
  utxoScriptVerified?: boolean
  utxoScriptCreatingTransactionHash?: string
  + ethSwapCreationTransactionHash?: string
  secret?: string
  isParticipantSigned?: boolean
  @@ -93,6 +94,7 @@ class Flow {
  utxoScriptValues: null,
  utxoScriptVerified: false,
  utxoScriptCreatingTransactionHash: null,
  + ethSwapCreationTransactionHash: null,
  },
  ...{
  /** UTXO-AB **/
  