[ECS] [request]: Match the status retrieved from the task metadata endpoint with the actual task status

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**Tell us about your request**
Plese match the value of KnownStatus retrieved from the task metadata endpoint with the value of lastStatus from the response of DescribeTasks API.

**Which service(s) is this request for?**
ECS Agent

**Tell us about the problem you're trying to solve. What are you trying to do, and why is it hard?**
Currently, there is the below difference between the KnownStatus retrieved from the task metadata endpoint and the lastStatus from the DescribeTasks API response.

- lastStatus: RUNNING -> DEACTIVATING-> STOPPED
- KnownStatus: RUNNING -> STOPPED

Therefore, it is currently not possible to perform a graceful shutdown after detecting the DEACTIVATING status within the task.

**Are you currently working around this issue?**
Handling [Task state change events](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/ecs_cwe_events.html#ecs_task_events) is a workaround.

**Additional context**
ECS Agent 1.70.2