[Dashboard] Handle loading state for marketplace ui (#4321)

## Problem solved

Short description of the bug fixed or feature added

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## PR-Codex overview
This PR focuses on improving error handling in the `list-form.tsx` file by setting `isFormLoading` to false when an error occurs during NFT approval.

### Detailed summary
- Added `setIsFormLoading(false)` to handle error in NFT approval process.

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Author: kien-ngo

apps/dashboard/src/contract-ui/tabs/listings/components/list-form.tsx

@@ -215,6 +215,7 @@ export const CreateListingsForm: React.FC<CreateListingsFormProps> = ({
             try {
               await sendAndConfirmTx.mutateAsync(approveTx);
             } catch {
+              setIsFormLoading(false);
               return toast.error("Failed to approve NFT for marketplace");
             }
           }