Remove deprecated syntax (#6561)

* Remove deprecated syntax

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

* fix one test

* fix sketch on revolved face test

* fix test: empty-scene default-planes act as expected

* fix up more tests

* another fix

* remove another const

---------

Signed-off-by: Nick Cameron <nrc@ncameron.org>
Co-authored-by: Kurt Hutten Irev-Dev <k.hutten@protonmail.ch>

e2e/playwright/testing-constraints.spec.ts

@@ -1126,7 +1126,7 @@ test.describe('Electron constraint tests', () => {
         await fsp.writeFile(
           path.join(bracketDir, 'main.kcl'),
           `@settings(defaultLengthUnit = in)
-          const part001 = startSketchOn(XY)
+          part001 = startSketchOn(XY)
             |> startProfile(at = [4.83, 12.56])
             |> line(end = [15.1, 2.48])
             |> line(end = [3.15, -9.85], tag = $seg01)