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/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
+    }
+}