Merge pull request #15692 from Automattic/vkarpov15/gh-14949

fix(connection): snapshot Date so stale heartbeat check protects against useFakeTimers

Author: vkarpov15

lib/connection.js

@@ -28,6 +28,10 @@ const decorateBulkWriteResult = require('./helpers/model/decorateBulkWriteResult
 const arrayAtomicsSymbol = require('./helpers/symbols').arrayAtomicsSymbol;
 const sessionNewDocuments = require('./helpers/symbols').sessionNewDocuments;
 
+// Snapshot the native Date constructor to ensure both Date.now() and new Date() (and other Date methods)
+// bypass timer mocks such as those set up by useFakeTimers().
+const Date = globalThis.Date;
+
 /**
  * A list of authentication mechanisms that don't require a password for authentication.
  * This is used by the authMechanismDoesNotRequirePassword method.