Give a warning when using per-project default units (#5956)

* Give a warning when using per-project default units

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* Factor non-settings out of MetaSettings

Signed-off-by: Nick Cameron <nrc@ncameron.org>

* Fix formatting

* Fix code pane e2e test

* Fix callstack blowup in edit flow

* Avoid dumb timeout issue with command registration in test

* Use a safer way to wait for modeling command registration in test

---------

Signed-off-by: Nick Cameron <nrc@ncameron.org>
Co-authored-by: Nick Cameron <nrc@ncameron.org>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Pierre Jacquier <pierre@zoo.dev>
Co-authored-by: Frank Noirot <frankjohnson1993@gmail.com>

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

@@ -1270,7 +1270,7 @@ pub enum NonCodeValue {
     /// An example of this is the following:
     /// ```no_run
     /// /* This is a
-    ///     block comment */
+    /// block comment */
     /// 1 + 1
     /// ```
     /// Now this is important. The block comment is attached to the next line.