test(node): Fix flaky MongoDB integration test#21064
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Set high heartbeatFrequencyMS (60s) to prevent extra MongoDB driver heartbeats from firing during the test. The 2 isMaster spans come from the initial connection handshake and are deterministic. Extra heartbeats were causing 9 spans instead of 8 on slower CI machines. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
mydea
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May 20, 2026
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closes #20781
closes JS-2424
closes #20958
closes JS-2523
Set high heartbeatFrequencyMS (60s) to prevent extra MongoDB driver heartbeats from firing during the test. The 2 isMaster spans come from the initial connection handshake and are deterministic. Extra heartbeats were causing 9 spans instead of 8 on slower CI machines.