Backport of docker: close response connection once stdin is exhausted into release/1.9.x #24243
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Backport
This PR is auto-generated from #24202 to be assessed for backporting due to the inclusion of the label backport/1.9.x.
The below text is copied from the body of the original PR.
This PR ensures we close the hijacked writer connection once there is no more data going into the stdin buffer of the exec'd command. Without this, the command (tar in this case) would hang forever awaiting more input.
Fixes #24171
Internal: NET-11378
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