fix(搜索投票活动): 时间为非必传字段.

src/main/java/com/finikes/oc/vote/controller/VoteController.java

@@ -59,8 +59,9 @@ public class VoteController {
     public ApiResponse<List<VoteActivityViewDto>> searchVoteActivity(
             @RequestParam(value = "pageNum", defaultValue = "1") int pageNum,
             @RequestParam(value = "pageCapacity", defaultValue = "10") int pageCapacity,
-            @RequestParam(value = "key") String key, @RequestParam(value = "startTime") Date startTime,
-            @RequestParam(value = "endTime") Date endTime) {
+            @RequestParam(value = "key", required = false) String key,
+            @RequestParam(value = "startTime", required = false) Date startTime,
+            @RequestParam(value = "endTime", required = false) Date endTime) {
         VoteActivitySearchDto dto = new VoteActivitySearchDto();
         dto.setPageNum(pageNum);
         dto.setPageCapacity(pageCapacity);