Rename BinOpKind::lazy as BinOpKind::is_lazy.

To match `BinOpKind::is_comparison` and `hir::BinOpKind::is_lazy`.

compiler/rustc_ast/src/ast.rs

@@ -881,7 +881,8 @@ impl BinOpKind {
             Gt => ">",
         }
     }
-    pub fn lazy(&self) -> bool {
+
+    pub fn is_lazy(&self) -> bool {
         matches!(self, BinOpKind::And | BinOpKind::Or)
     }