feat(challenges): 修改挑战列表过滤条件为只显示正在进行的挑战

src/challenges/challenges.service.ts

@@ -50,7 +50,7 @@ export class ChallengesService {
         challenge,
         status: this.computeStatus(challenge.startAt, challenge.endAt),
       }))
-      .filter(({ status }) => status !== ChallengeStatus.UPCOMING)
+      .filter(({ status }) => status === ChallengeStatus.ONGOING)
       .sort((a, b) => {
         const priorityDiff = statusPriority[a.status] - statusPriority[b.status];
         if (priorityDiff !== 0) {