CSHARP-5838: Clarify interaction between TLS errors and backpressure

[sanych-sun]

Disable the backpressure changes for the release purposes.

[Copilot]

Pull request overview

This PR temporarily disables backpressure error label functionality by commenting out the implementation in AddBackpressureErrorLabelsIfRequired. The change is being made for release purposes to address potential issues with the interaction between TLS errors and backpressure handling.

Changes:

• Commented out the backpressure error labeling logic in BinaryConnection.cs

---

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[Copilot]

The entire method body is commented out, leaving a no-op method that still accepts a parameter. Consider either removing the method entirely if it's not being called, or adding a clear TODO comment explaining why this is temporarily disabled and when it should be re-enabled. This will prevent confusion for future maintainers.

Suggested change

	// if (exception == null)
	// {
	// return;
	// }
	//
	// if (exception.ContainsTimeoutException || exception.InnerException is IOException)
	// {
	// exception.AddErrorLabel("SystemOverloadedError");
	// exception.AddErrorLabel("RetryableError");
	// }
	// TODO: Backpressure-related error labeling is intentionally disabled.
	// This method is currently a no-op and preserved only to maintain API/behavioral
	// compatibility with existing callers. If backpressure handling is reintroduced,
	// consider adding appropriate error labels (for example, for timeout or IO-related
	// exceptions) here to support any desired retry or diagnostics behavior.

[BorisDog]

LGTM