fix: allow scrolling in QuickReviewDialog when content overflows viewport (#108)

The dialog had no max-height or overflow handling, so tall content (e.g.
extern representation with warnings + journal preview) was clipped with
no way to scroll.

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

components/transactions/QuickReviewDialog.tsx

@@ -146,7 +146,7 @@ export default function QuickReviewDialog({
       }
       onOpenChange(o)
     }}>
-      <DialogContent className="max-w-md">
+      <DialogContent className="max-w-md max-h-[85vh] overflow-y-auto">
         <DialogHeader>
           <DialogTitle>Granska bokföring</DialogTitle>
           <DialogDescription>