[PD] Abort request if transfer fails

[ByronHsu]

Motivation

The current transfer failure handling is a placeholder. The correct way to do it is

1. Raise the real exception from sender/receiver in failure_exception()
2. When a failure status is polled, abort the request immediately and log the error

In additional,
I added a guardrail in scheduler to abort requests immediately if the req does not have bootstrap_id (usually because not sent from LB)

Modifications

Checklist

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• Add unit tests as outlined in the Running Unit Tests.
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[ShangmingCai]

LGTM. Will finish the failure_exception part of mooncake based on this PR tomorrow.