Built-in TLS module unexpectedly treats "rejectUnauthorized: undefined" as "rejectUnauthorized: false", disabling all certificate validation

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const https = require('https');
const request = https.get('https://expired.badssl.com', { rejectUnauthorized: undefined });
request.on('error', (e) => console.log('Request failed:', e.message));
request.on('response', (e) => console.log('Request succeeded'));