issue: #40052
task delta cache rely on the taskID is unique, so it incDeltaCache at
AddTask, and decDeltaCache at RemoveTask, but the taskID allocator is
not atomic, which cause two task with same taskID, in such case, it will
call incDeltaCache twice, but call decDeltaCacheOnce, which cause delta
cache leak.
---------
Signed-off-by: Wei Liu <wei.liu@zilliz.com>