[fix](cloud-mow) Make delete bitmap cache expired time more reasonable (

apache#47295)

after pr apache#46365, commit mow table
may cost 1800s at most (rpc timeout*retry times), so the delete bitmap
cache expiration time should be set to 1800s.This cache will be
automatically deleted after the loading task is completed. Only when
task fails, this cache will be clean in background.

be/src/cloud/config.cpp

@@ -72,7 +72,7 @@ DEFINE_Bool(enable_cloud_txn_lazy_commit, "false");
 
 DEFINE_mInt32(remove_expired_tablet_txn_info_interval_seconds, "300");
 
-DEFINE_mInt32(tablet_txn_info_min_expired_seconds, "120");
+DEFINE_mInt32(tablet_txn_info_min_expired_seconds, "1800");
 
 DEFINE_mBool(enable_use_cloud_unique_id_from_fe, "true");