REMOVED node may never send heartbeat to fetch newest config

var replTest = new ReplSetTest({nodes: 2}); const nodes = replTest.startSet(); replTest.initiateWithHighElectionTimeout();   var primary = replTest.getPrimary(); var secondary = replTest.getSecondary(); let config = replTest.getReplSetConfigFromNode(); let origConfig = Object.assign({}, config);   jsTestLog( "Starting reconfigs." );   // Reconfig from {n0,n1} -> {n0}. // n1 will now be REMOVED. config.version++; config.members = [origConfig.members[0]]; jsTestLog( "Reconfiguring to members: " + tojsononeline(config.members.map(m => m._id)) + " with version: " + config.version); assert.commandWorked(primary.adminCommand({replSetReconfig: config, maxTimeMS: 5000}));   // Wait for the config to propagate to n1 so it enters REMOVED. sleep(4000);   // No-op reconfig from {n0} -> {n0}. // n1 is still REMOVED. config.version++; jsTestLog( "Reconfiguring to members: " + tojsononeline(config.members.map(m => m._id)) + " with version: " + config.version); assert.commandWorked(primary.adminCommand({replSetReconfig: config, maxTimeMS: 5000}));   // Reconfig from {n0} -> {n0, n1}. // n1 was previously REMOVED, but will now be added back in. It should be able to get the new config // eventually. config.version++; config.members = [origConfig.members[0], origConfig.members[1]]; jsTestLog( "Reconfiguring to members: " + tojsononeline(config.members.map(m => m._id)) + " with version: " + config.version); assert.commandWorked(primary.adminCommand({replSetReconfig: config, maxTimeMS: 5000}));   replTest.awaitNodesAgreeOnConfigVersion(); replTest.stopSet();