RUBY-3750 Clarify NoWritesPerformed error label

[comandeo-mongo]

When the overload retry loop encounters multiple errors, the driver now returns the correct error based on NoWritesPerformed labels per the DRIVERS-3326 spec clarification. If all errors indicate no write was attempted, the first error is returned; if mixed, the most recent write-attempted error is returned. Adds three new retryable writes prose tests (spec test 6, cases 1-3).

[Copilot]

Pull request overview

Updates retryable writes overload backoff behavior to return the correct error when multiple errors are encountered, following the clarified NoWritesPerformed label rules from the retryable writes spec.

Changes:

• Track and raise error_to_raise (instead of always raising the most recent error) in the overload retry paths based on NoWritesPerformed.
• Update diagnostic note attachment to apply to the error that will be raised.
• Add Retryable Writes Prose Test 6 coverage (cases 1–3) for error propagation across multiple errors.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
lib/mongo/retryable/write_worker.rb	Adjusts overload retry loops to select the correct error to raise using NoWritesPerformed rules.
spec/mongo/retryable/retryable_writes_error_propagation_prose_spec.rb	Adds new prose spec cases verifying correct error propagation behavior.

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