Remote multiline commands scripts are not cleaned up

Is there an existing issue for this bug?

• I have searched the existing open issues and found none that apply.
• If I find any issue of interest that is related or closed, I will included a link to it in this issue.

Required Troubleshooting Steps

• I have read and performed the troubleshooting steps
• I have tried both values of the remote.SSH.useLocalServer setting
• My issue was not covered in the Tips and Tricks linked from the Troubleshooting Wiki.
• I will include a complete copy of my Remote - SSH logs by running Remote-SSH: Show Log in the command palette or from View > Output in the menu bar

[Optional] Diagnose with Copilot

I did not ask the @remote-ssh participant for help

In step 2 of the troubleshooting wiki, what was the result of running the generated SSH command verbatim outside of VS Code?

I did not try step 2 of the troubleshooting steps

Remote-SSH Log

Not relevant

Expected Behavior

The files in temporary directory cleaned up when not needed anymore.

Actual Behavior

$ du -cks "$TMP"/vscode-*-multi-line-command-* | tee /proc/self/fd/2 | wc -l
4702(k)    total
420 (files)

Steps To Reproduce

Use SSH remote like normal.

Anything else?

No response

Reproduce the issue through a normal SSH remote session and inspect the temporary files matching vscode--multi-line-command- in the remote temporary directory. Trace where these generated scripts are created and whether their lifecycle is handled after use; done means no longer-needed files are cleaned up and the existing remote workflow still works.