### What changes were proposed in this pull request?
When I tested the performance of Flink with Celeborn in session mode, using both the shuffle-service plugin and hybrid shuffle integration strategies, I noticed that the task heap continuously grew even when no jobs were running.
The issue arises because the Celeborn client sends addCredit or notifyRequiredSegment requests, expecting a response. This creates a callback and maintains a reference to CelebornBufferStream, SingleInputGate, and StreamTask.
These callbacks are stored in TransportResponseHandler#outstandingRpcs and are cleared upon receiving a response.
However, the Worker does not send a response for these two RPC requests, which leads to a significant memory leak in the client.
### Why are the changes needed?
It may cause flink client memory leak.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
Test by rerun TPCDS in Flink session mode.
Closes#3103 from codenohup/celeborn-1867.
Authored-by: codenohup <huangxu.walker@gmail.com>
Signed-off-by: Shuang <lvshuang.xjs@alibaba-inc.com>
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