fix crash when opening a mocked transaction

src/routes/safe/store/actions/createTransaction.ts

@@ -202,6 +202,7 @@ const createTransaction = ({
       confirmations: [], // this is used to determine if a tx is pending or not. See `calculateTransactionStatus` helper
       value: txArgs.valueInWei,
       safeTxHash: generateSafeTxHash(safeAddress, txArgs),
+      submissionDate: new Date().toISOString(),
     }
     const mockedTx = await mockTransaction(txToMock, safeAddress, state)
 

src/routes/safe/store/actions/processTransaction.ts

@@ -108,6 +108,7 @@ const processTransaction = ({
       ...txArgs,
       confirmations: [], // this is used to determine if a tx is pending or not. See `calculateTransactionStatus` helper
       value: txArgs.valueInWei,
+      submissionDate: new Date().toISOString(),
     }
     const mockedTx = await mockTransaction(txToMock, safeAddress, state)
 

src/routes/safe/store/actions/transactions/utils/transactionHelpers.ts

@@ -314,6 +314,7 @@ export type TxToMock = TxArgs & {
   confirmations: []
   safeTxHash: string
   value: string
+  submissionDate: string
 }
 
 export const mockTransaction = (tx: TxToMock, safeAddress: string, state: AppReduxState): Promise<Transaction> => {