test: increase coverage for trace_events.js

Add a test case to increase the test coverage for lib/trace_events.js.

Refs: https://codecov.io/gh/nodejs/node/src/ea7a6f9dbd05654fff3f8c474ac0f5126bc87376/lib/trace_events.js#L70...75

PR-URL: #30705
Refs: https://coverage.nodejs.org/coverage-ea7a6f9dbd05654f/lib/trace_events.js.html#L70
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Trivikram Kamat <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Gireesh Punathil <[email protected]>

Author: Trott

test/parallel/test-util-inspect.js

@@ -2543,8 +2543,13 @@ assert.strictEqual(
   // Tracing class respects inspect depth.
   try {
     const trace = require('trace_events').createTracing({ categories: ['fo'] });
-    const actual = util.inspect({ trace }, { depth: 0 });
-    assert.strictEqual(actual, '{ trace: [Tracing] }');
+    const actualDepth0 = util.inspect({ trace }, { depth: 0 });
+    assert.strictEqual(actualDepth0, '{ trace: [Tracing] }');
+    const actualDepth1 = util.inspect({ trace }, { depth: 1 });
+    assert.strictEqual(
+      actualDepth1,
+      "{ trace: Tracing { enabled: false, categories: 'fo' } }"
+    );
   } catch (err) {
     if (err.code !== 'ERR_TRACE_EVENTS_UNAVAILABLE')
       throw err;