[Bug]: Callback Management

[dkovba]

Created from apple/container#167.

I have done the following

• I have searched the existing issues
• If possible, I've reproduced the issue using the 'main' branch of this project

Steps to reproduce

Not applicable.

Current behavior

Callback Management

• There's potential for callbacks to be invoked in unexpected order
• Some callbacks may never be called if a race condition occurs

Expected Behavior

Callback Invocation

• Each callback should be invoked exactly once
• Callbacks should occur even if the connection is terminated
• Proper timeout and cancellation handling

Ordered Execution

• Operations with dependencies should be executed in the correct order
• Results should be delivered in a predictable sequence
• Long-running operations shouldn't block critical path operations

Environment

Not applicable.

Code of Conduct

• I agree to follow this project's Code of Conduct

[dcantah]

We don't use xpc in this project, that's solely a container surface

[dkovba]

We don't use xpc in this project, that's solely a container surface

Updated the problem description to remove the mentioning of XPC communication.

[dkovba]

@adityaramani Could you please audit LinuxProcess class for the mentioned issues? Specifically, readabilityHandler.