Update ExamAnswerAnalysisService.php

app/Services/ExamAnswerAnalysisService.php

@@ -1727,7 +1727,7 @@ class ExamAnswerAnalysisService
                         $questions[] = [
                             'question_id' => $questionId,
                             'student_answer' => null,
-                            'is_correct' => [0], // 未提交默认为正确
+                            'is_correct' => [1], // 未提交默认为正确
                             'teacher_comment' => null,
                             'score' => $defaultScore,
                             'score_obtained' => $defaultScore, // 正确则得满分