Add offset plane point-and-click user flow (#4552)

* Add a code mod for offset plane

* Add support for default plane selections to our `otherSelections` object

* Make availableVars work without a selection range
(because default planes don't have one)

* Make default planes selectable in cmdbar even if AST is empty

* Add offset plane command and activate in toolbar

* Avoid unnecessary error when sketching on offset plane by returning early

* Add supporting test features for offset plane E2E test

* Add WIP E2E test for offset plane
Struggling to get local electron test suite running properly

* Typos

* Lints

* Fix test by making it a web-based one:
I couldn't use the cmdBar fixture with an electron test for some reason.

* Update src/lib/commandBarConfigs/modelingCommandConfig.ts

* Update src/machines/modelingMachine.ts

* Revert changes to `homePageFixture`, as they were unused

* @Irev-Dev feedback: convert action to actor, fix machine layout

* Update plane icon to be not dashed, follow conventions closer

src/clientSideScene/sceneInfra.ts

@@ -22,7 +22,7 @@ import {
 import { Coords2d, compareVec2Epsilon2 } from 'lang/std/sketch'
 import { useModelingContext } from 'hooks/useModelingContext'
 import * as TWEEN from '@tweenjs/tween.js'
-import { Axis } from 'lib/selections'
+import { Axis, NonCodeSelection } from 'lib/selections'
 import { type BaseUnit } from 'lib/settings/settingsTypes'
 import { CameraControls } from './CameraControls'
 import { EngineCommandManager } from 'lang/std/engineConnection'
@@ -654,7 +654,7 @@ export class SceneInfra {
       await this.onClickCallback({ mouseEvent, intersects })
     }
   }
-  updateOtherSelectionColors = (otherSelections: Axis[]) => {
+  updateOtherSelectionColors = (otherSelections: NonCodeSelection[]) => {
     const axisGroup = this.scene.children.find(
       ({ userData }) => userData?.type === AXIS_GROUP
     )