CNBC's Jim Cramer said he's unfazed by Tuesday's sell-off in AI stocks because it's exactly what the market needs."Rain is to gardening as sell-offs are to the stock market," the "Mad Money" host said. "You should expect them, maybe even hope for them. We just don't realize it at the time."Stocks retreated on Tuesday following a Wall Street Journal report that said OpenAI missed internal growth targets, raising questions about spending across a bunch of artificial intelligence-linked stocks. After weeks of ...