Fix edit button issue

The edit button was causing the page to turn white and the content to disappear. This commit addresses this issue.

src/components/TransactionEditDialog.tsx

@@ -157,7 +157,7 @@ const TransactionEditDialog: React.FC<TransactionEditDialogProps> = ({
       if (isSubmitting && !newOpen) return;
       onOpenChange(newOpen);
     }}>
-      <DialogContent className={`sm:max-w-md mx-auto ${isMobile ? 'rounded-xl overflow-hidden' : ''}`}>
+      <DialogContent className={`sm:max-w-md mx-auto bg-white ${isMobile ? 'rounded-xl overflow-hidden' : ''}`}>
         <DialogHeader>
           <DialogTitle>지출 수정</DialogTitle>
           <DialogDescription>