lint default planes and add a suggestion (#6587)

lint default planes and other plane cleanup

Signed-off-by: Jess Frazelle <github@jessfraz.com>

rust/kcl-lib/src/parsing/ast/types/mod.rs

@@ -323,6 +323,7 @@ impl Node<Program> {
         let rules = vec![
             crate::lint::checks::lint_variables,
             crate::lint::checks::lint_object_properties,
+            crate::lint::checks::lint_should_be_default_plane,
             crate::lint::checks::lint_should_be_offset_plane,
         ];