Cache issue on HLEN with HSETEX

**Describe the bug**
HLEN return incorrect value, when key expired

**To Reproduce**
HSETEX _Key 5 _SubKey 1
...After 10 seconds
HLEN _Key
- return 1

HDEL _Key AnyVal || HKEYS _Key
- refresh cache and HLEN _Key returns 0

**Expected behavior**
After exire time HLEN should return correct value

**Environment (please complete the following information):**
- OS: Docker image : docker.dragonflydb.io/dragonflydb/dragonfly
redis_version:6.2.11
dragonfly_version:df-v1.21.4
redis_mode:standalone
arch_bits:64
os:Linux 6.1.0-23-amd64 x86_64
multiplexing_api:epoll

Start by reproducing the sequence with HSETEX, waiting past the expiry, and running HLEN, then compare it with HDEL or HKEYS, which refresh the result. Trace the HLEN expiration handling and add or run the relevant regression coverage; done means HLEN returns 0 immediately after the hash expires.

Written by the indexing model from the issue text.