fix(emergency): 修复宣教模块3个状态机与兼容性缺陷

- auditStatus 新增 insertStrategy=IGNORED，修复新增/复制时存0而非NULL
- submitForReview 增加PENDING重复提交拦截
- recordRead/toggleFavorite 重复键异常catch兼容DM8数据库

Co-Authored-By: Claude <noreply@anthropic.com>

health-emergency/health-emergency-api/src/main/java/com/renkang/emergency/entity/FirstAidResource.java

@@ -91,7 +91,7 @@ public class FirstAidResource implements Serializable {
 
     /** 审核状态(null=无审核,10=待审核,11=已通过,12=已驳回)，值由 FirstAidConstants 常量控制 */
     @Schema(title = "审核状态(null=无审核,10=待审核,11=已通过,12=已驳回)")
-    @TableField(updateStrategy = FieldStrategy.IGNORED)
+    @TableField(insertStrategy = FieldStrategy.IGNORED, updateStrategy = FieldStrategy.IGNORED)
     private Integer auditStatus;
 
     /** 驳回原因 */