refactor(vo): 移除创建与更新时间的必填校验

keyboard-server/src/main/java/com/yolo/keyboard/controller/admin/aicompanion/vo/KeyboardAiCompanionSaveReqVO.java

@@ -51,11 +51,9 @@ public class KeyboardAiCompanionSaveReqVO {
     private Integer popularityScore;
 
     @Schema(description = "创建时间", requiredMode = Schema.RequiredMode.REQUIRED)
-    @NotNull(message = "创建时间不能为空")
     private LocalDateTime createdAt;
 
     @Schema(description = "更新时间", requiredMode = Schema.RequiredMode.REQUIRED)
-    @NotNull(message = "更新时间不能为空")
     private LocalDateTime updatedAt;
 
     @Schema(description = "开场白")