By Sheila Dang (Reuters) – Snap Inc on Thursday forecast no revenue growth in the typically busy holiday quarter, sending a warning signal that rising inflation and the war in Ukraine could hurt other tech companies dependent on advertising revenue. Shares of Snap dropped 27% in after-hours trading. The owner of photo messaging app Snapchat is the first of the major tech firms to report quarterly earnings, and the results cast a shadow for other platforms that rely on advertising revenue such as Facebook owner Meta Platforms Inc, Alphabet’s Google and Pinterest, which report their results next…