Do not write to file or update code editor a ridiculous amount of times and update them both at the most appropriate moments. (#4479)

* Reapply "Deflake project settings override on desktop (#4370)" (#4450)

This reverts commit b11040c23c.

* Refactor writeToFile and updateCodeEditor to happen at appropriate times

* Turn error into warning about out of date AST.

* Rename setUp to setup

* ONLY reload current file on changes.

* If value is falsey then don't try to executeAst

* Fix up code based selections after constraints

* Correct any last missing code mods

* Update src/clientSideScene/ClientSideSceneComp.tsx

Remove eslint rule no-floating-promises

Co-authored-by: Jonathan Tran <jonnytran@gmail.com>

* Fixups

* Fix FileTree failing

---------

Co-authored-by: Jonathan Tran <jonnytran@gmail.com>

src/lib/useCalculateKclExpression.ts

@@ -115,6 +115,7 @@ export function useCalculateKclExpression({
       setCalcResult(typeof result === 'number' ? String(result) : 'NAN')
       init && setValueNode(init)
     }
+    if (!value) return
     execAstAndSetResult().catch(() => {
       setCalcResult('NAN')
       setValueNode(null)