By Simone McCarthy, CNN Beijing (CNN) — China’s leaders have spent the past week unveiling their plan to steer the world’s second-largest economy through looming challenges by transforming the country into a technological powerhouse and ramping up spending to hit an ambitious growth target. The thousands of delegates who gathered in Beijing for China’s week-long “two sessions” meeting of its rubber stamp legislature and top political advisory body will vote Tuesday, typically almost unanimously, to approve the plan. The stakes are high for China’s government, and Xi Jinping, the country’s most powerful leader in decades, to get the initiatives right….