Bugfix: Optional chaining to shortcircuit error with container

[mmeigs]

Just saw this error in Cloudwatch. Honestly not sure if this was from what I'm dealing with, but I found this in the code and thought it might be worth adding to make sure this kind of error doesn't occur.

Error seen in Cloudwatch:

    "errorType": "TypeError",
    "errorMessage": "Cannot read properties of undefined (reading 'lastStatus')",
    "stack": [
        "TypeError: Cannot read properties of undefined (reading 'lastStatus')",
        "    at ECSContainer.stopZombieECSTask (/var/task/api/controllers/v1/jobs.js:78232:25)",
        "    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)",
        "    at async stopECSTask (/var/task/api/controllers/v1/jobs.js:78815:3)",
        "    at async /var/task/api/controllers/v1/jobs.js:78761:15",
        "    at async Promise.all (index 0)",
        "    at async Runtime.HandleJobs [as handler] (/var/task/api/controllers/v1/jobs.js:78734:3)"
    ]
}

Link to Cloudwatch error

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[rayangler]

Good catch, thanks for fixing!