Change semmantical analyzis to tree validation as per @matklad
Change semmantical analyzis to tree validation as per @matklad

Co-Authored-By: Aleksey Kladov <512cbac2223a90836a257e6a37adfce834a97cee@gmail.com>
rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer