test: increase coverage for util.inspect()

Confirm that own constructor value displays correctly.

Refs: https://coverage.nodejs.org/coverage-0d468ab200584c3a/lib/internal/util/inspect.js.html#L550

PR-URL: #36228
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/parallel/test-util-inspect.js

@@ -2991,3 +2991,23 @@ assert.strictEqual(
   // Consistency check.
   assert(fullObjectGraph(global).has(Function.prototype));
 }
+
+{
+  // Confirm that own constructor value displays correctly.
+
+  function Fhqwhgads() {}
+
+  const sterrance = new Fhqwhgads();
+  sterrance.constructor = Fhqwhgads;
+
+  assert.strictEqual(
+    util.inspect(sterrance, { showHidden: true }),
+    'Fhqwhgads {\n' +
+      '  constructor: <ref *1> [Function: Fhqwhgads] {\n' +
+      '    [length]: 0,\n' +
+      "    [name]: 'Fhqwhgads',\n" +
+      '    [prototype]: { [constructor]: [Circular *1] }\n' +
+      '  }\n' +
+      '}'
+  );
+}