fix: hide BrokenResourceError warnings that polute logs

[mangelajo]

when the remote end closes the call (the call has ended) we get a BrokenResourceError in the stream. We need unecessary warnings, we add masking that was removed in e756ba9.

Fixes this:

j power on
~ ⚡qti-snapdragon-ride4-sa8775p-03 ➤ 
[02/24/26 13:29:42] WARNING  WARNING:jumpstarter.streams.common:stream copy interrupted (BrokenResourceError):                   common.py:30

Summary by CodeRabbit

• Bug Fixes
  • Refined error handling during streaming operations to improve reliability and provide enhanced diagnostic logging for better troubleshooting.

[bennyz]

similar to #257

[coderabbitai]

📝 Walkthrough

Walkthrough

Error handling in the copy_stream function was restructured to separate exception handling logic. BrokenResourceError is now caught and suppressed independently during teardown, while ClosedResourceError and asyncio.InvalidStateError are handled separately with warning logs and debug tracing.

Changes

Cohort / File(s)	Summary
Error Handling Refactoring python/packages/jumpstarter/jumpstarter/streams/common.py	Split combined exception clause in copy_stream into two branches: one suppressing BrokenResourceError during teardown, and another logging warnings for ClosedResourceError and asyncio.InvalidStateError with optional debug root cause tracing.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

Streams now flow with clarity bright,
Error paths split left and right,
Broken resources fade from sight,
While warnings guard the flow at night,
A rabbit hops with pure delight! 🐰

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the main change: hiding BrokenResourceError warnings that clutter logs, which directly matches the PR objective of masking unnecessary warnings in stream teardown.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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✨ Finishing Touches

• 📝 Generate docstrings (stacked PR)
• 📝 Generate docstrings (commit on current branch)

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch remove-brokenres-warnings

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[mangelajo]

similar to #257

oh, in fact I like his PR better, I was thinking that it was better to move it under debug.

Thanks for the pointer.