The niche chipmaker still faces tough near-term headwinds.Navitas Semiconductor's (NVTS 4.36%) stock has experienced significant fluctuations over the past year. In April, the chipmaker's stock hit a record low of $1.52 per share. That marked a decline of more than 90% from its record high of $20.16 in November 2021.Yet Navitas' stock currently trades at around $9. Most of that rally was driven by its new data center deal with Nvidia (NVDA 2.42%) this May, but is its stock still worth buying right now? What ...