Fixes: #10088

Explanation:

Issue: The approve screen gets rendered before the token Data was retrieved, resulting in errors in the console and white screen flashing before the original page renders.
Fix: The fix is to check for the tokenSymbol value before rendering the <ConfirmTransactionBase/> from confirm-approve.container.js, which in turn calls <ConfirmApproveContent/>. The check is using tokenSymbol as it is the only token data that is being used in the first rendering of <ConfirmApproveContent/>

Manual testing steps:

• Go to test-dapp
• Click on Create token, and approve the deploy transaction (ideally on a testnet)
• Wait for the transaction to be confirmed
• Click Approve tokens
• The notification window should pop up, the Approve confirmation screen renders with proper values on the first call and there is no error in the console.