Fix mixed units assemblies to work, regardless of project settings (#5818)

* Add mixed units test

* Add incorrect output

* Change to always set units since old units are not accurate

* Update output after fix

rust/kcl-lib/src/execution/exec_ast.rs

@@ -55,10 +55,9 @@ impl ExecutorContext {
         for annotation in annotations {
             if annotation.name() == Some(annotations::SETTINGS) {
                 if matches!(body_type, BodyType::Root) {
-                    let old_units = exec_state.length_unit();
                     exec_state.mod_local.settings.update_from_annotation(annotation)?;
                     let new_units = exec_state.length_unit();
-                    if !self.engine.execution_kind().await.is_isolated() && old_units != new_units {
+                    if !self.engine.execution_kind().await.is_isolated() {
                         self.engine
                             .set_units(new_units.into(), annotation.as_source_range())
                             .await?;

rust/kcl-lib/src/simulation_tests.rs

@@ -2224,3 +2224,24 @@ mod crazy_multi_profile {
         super::execute(TEST_NAME, true).await
     }
 }
+mod assembly_mixed_units_cubes {
+    const TEST_NAME: &str = "assembly_mixed_units_cubes";
+
+    /// Test parsing KCL.
+    #[test]
+    fn parse() {
+        super::parse(TEST_NAME)
+    }
+
+    /// Test that parsing and unparsing KCL produces the original KCL input.
+    #[test]
+    fn unparse() {
+        super::unparse(TEST_NAME)
+    }
+
+    /// Test that KCL is executed correctly.
+    #[tokio::test(flavor = "multi_thread")]
+    async fn kcl_test_execute() {
+        super::execute(TEST_NAME, true).await
+    }
+}