fix: add consistent CTRL-C and ESC handling to all dialogs (#426)

Co-authored-by: Letta <noreply@letta.com>

src/cli/App.tsx

@@ -5802,6 +5802,7 @@ Plan file path: ${planFilePath}`;
               <QuestionDialog
                 questions={getQuestionsFromApproval(currentApproval)}
                 onSubmit={handleQuestionSubmit}
+                onCancel={handleCancelApprovals}
               />
             )}