The company is well prepared for growth in any environment.There's no shortage of news in the AI sector these days, but investors looking for a long-term AI stock to buy and hold shouldn't be so swayed by the daily headlines.Instead, you'll want to find a company with an enduring business model, strong competitive advantage, and a clear path to long-term growth on the top and bottom lines. One stock that fits all three of those categories is Arm Holdings (ARM -0.70%), which is best known for licensing its C ...