However, a quick search reveals at least a few people claiming that Apple Maps has always been empty for Lebanon outside of major cities (and at least one commenter says they are Lebanese):
https://www.reddit.com/r/apple/comments/1sjmrol/comment/oft1...
https://www.reddit.com/r/NoStupidQuestions/comments/1sjoxqo/...
https://www.reddit.com/r/MapPorn/comments/1sjo66s/apple_maps...
https://www.reddit.com/r/lebanon/comments/1sjou17/apple_maps...
I don't know how trustworthy these comments are, but I don't see anyone contradicting them.
So it's definitely not clear this has anything to do with the current war.