fix:Type Command Expired Key Consistency (#3132)

* Fix Type Command Expired Key Consistency

* Change to English comments

Author: YuCai18

src/storage/src/redis_strings.cc

@@ -1671,7 +1671,14 @@ rocksdb::Status Redis::GetType(const storage::Slice& key, enum DataType& type) {
   BaseMetaKey base_meta_key(key);
   rocksdb::Status s = db_->Get(default_read_options_, handles_[kMetaCF], base_meta_key.Encode(), &meta_value);
   if (s.ok()) {
-    type = static_cast<enum DataType>(static_cast<uint8_t>(meta_value[0]));
+    // Check if key has expired
+    if (ExpectedStale(meta_value)) {
+      type = DataType::kNones;  // If key has expired, return "none" type
+    } else {
+      type = static_cast<enum DataType>(static_cast<uint8_t>(meta_value[0]));
+    }
+  } else {
+    type = DataType::kNones;  // If key doesn't exist, return "none" type
   }
   return Status::OK();
 }