CCTP deposit/withdraw to throw error if nobleClient is not initialized (#215)

* CCTP deposit/withdraw to throw error if nobleClient is not initialized

* update error str

src/lib/abacus/dydxChainTransactions.ts

@@ -56,6 +56,10 @@ class DydxChainTransactions implements AbacusDYDXChainTransactionsProtocol {
     this.store = undefined;
   }
 
+  get isNobleClientConnected(): boolean {
+    return this.nobleClient?.isConnected ?? false;
+  }
+
   setStore(store: RootStore): void {
     this.store = store;
   }

src/views/forms/AccountManagementForms/DepositForm.tsx

@@ -235,6 +235,10 @@ export const DepositForm = ({ onDeposit, onError }: DepositFormProps) => {
           throw new Error('Missing request payload');
         }
 
+        if (isCctp && !abacusStateManager.chainTransactions.isNobleClientConnected) {
+          throw new Error('Noble RPC endpoint unaccessible');
+        }
+
         setIsLoading(true);
 
         await validateTokenApproval();

src/views/forms/AccountManagementForms/WithdrawForm.tsx

@@ -148,6 +148,10 @@ export const WithdrawForm = () => {
           throw new Error('Invalid request payload');
         }
 
+        if (isCctp && !abacusStateManager.chainTransactions.isNobleClientConnected) {
+          throw new Error('Noble RPC endpoint unaccessible');
+        }
+
         setIsLoading(true);
         setError(undefined);