http: do not override user-provided options object

PR-URL: https://github.com/nodejs/node/pull/33633
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Paolo Insogna <paolo@cowtech.it>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/parallel/test-http-client-insecure-http-parser-error.js

@@ -0,0 +1,14 @@
+'use strict';
+
+require('../common');
+const assert = require('assert');
+const ClientRequest = require('http').ClientRequest;
+
+{
+  assert.throws(() => {
+    new ClientRequest({ insecureHTTPParser: 'wrongValue' });
+  }, {
+    code: 'ERR_INVALID_ARG_TYPE',
+    message: /insecureHTTPParser/
+  }, 'http request should throw when passing invalid insecureHTTPParser');
+}