Add semver version comparison test

Tests that 1.0.0 < 1.0.1 using Bun.semver.order() API

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

test/js/bun/util/bun-semver.test.ts

@@ -0,0 +1,6 @@
+import { expect, test } from "bun:test";
+
+test("semver version comparison: 1.0.0 < 1.0.1", () => {
+  const result = Bun.semver.order("1.0.0", "1.0.1");
+  expect(result).toBe(-1);
+});