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/execution/kcl_value.rs

@@ -4,6 +4,7 @@ use anyhow::Result;
 use schemars::JsonSchema;
 use serde::Serialize;
 
+use super::types::UnitType;
 use crate::{
     errors::KclErrorDetails,
     execution::{
@@ -19,8 +20,6 @@ use crate::{
     CompilationError, KclError, ModuleId, SourceRange,
 };
 
-use super::types::UnitType;
-
 pub type KclObjectFields = HashMap<String, KclValue>;
 
 /// Any KCL value.