[NoahStapp]

PYTHON-6122. Implements mongodb/specifications#1988.

Changes in this PR

See ticket.

Test Plan

Unified test changes.

Checklist

Checklist for Author

• Did you update the changelog (if necessary)?
• Is there test coverage?
• Is any followup work tracked in a JIRA ticket? If so, add link(s).

Checklist for Reviewer

• Does the title of the PR reference a JIRA Ticket?
• Do you fully understand the implementation? (Would you be comfortable explaining how this code works to someone else?)
• Is all relevant documentation (README or docstring) updated?

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[Copilot]

🟢 Approval recommended

These focused, test-only changes consistently match client application names to failpoint filters, with no identified blocking issues.

No open issues 🎉

What changed in this PR

This PR reduces flakiness in PyMongo’s unified handshake-error and command-logging tests by limiting failpoints to the intended test clients.

Changes:

• Adds explicit application names to clients in all three fixtures.
• Adds matching application-name filters to failpoints so unrelated clients do not consume the injected failures.

File	Description
test/​retryable_writes/​unified/​handshakeError.json	Scopes handshake failpoints to the retryable-write test client.
test/​retryable_reads/​unified/​handshakeError.json	Scopes handshake failpoints to the retryable-read test client.
test/​command_logging/​redacted-commands.json	Scopes authentication failpoints to the command-redaction test client.

_{Review effort: Balanced}

[blink1073]

LGTM