Always give new files and dirs a new index if their names are taken (#3460)

* Add actual support for makeUnique parameter

* Add uniqueness logic to dirs, make text-to-cad receive unique filename

* No longer need makeUnique flag, it's always on

* fmt

* Don't show toast when name hasn't changed during a rename

* fmt

* Get "interact with many" text-to-cad test passing again

* Get "engine fails export" back to reliably green

* Maybe more stable click target for text-to-cad test

* Make "export is already going" test moderately more reliable

* Mark "export is already going" as fixme

* Undo that fixme thing I take it back

src/components/ModelingMachineProvider.tsx

@@ -85,6 +85,7 @@ import {
 } from 'lang/std/engineConnection'
 import { submitAndAwaitTextToKcl } from 'lib/textToCad'
 import { useFileContext } from 'hooks/useFileContext'
+import { PLAYWRIGHT_MOCK_EXPORT_DURATION } from 'lib/constants'
 
 type MachineContext<T extends AnyStateMachine> = {
   state: StateFrom<T>
@@ -393,10 +394,24 @@ export const ModelingMachineProvider = ({
             selection: { type: 'default_scene' },
           }
 
+          const mockExportDuration = window.localStorage.getItem(
+            PLAYWRIGHT_MOCK_EXPORT_DURATION
+          )
+
+          console.log('mockExportDuration', mockExportDuration)
+
+          // Artificially delay the export in playwright tests
           toast.promise(
-            exportFromEngine({
-              format: format,
-            }),
+            Promise.all([
+              exportFromEngine({
+                format: format,
+              }),
+              mockExportDuration
+                ? new Promise((resolve) =>
+                    setTimeout(resolve, Number(mockExportDuration))
+                  )
+                : Promise.resolve(),
+            ]),
             {
               loading: 'Starting print...',
               success: 'Started print successfully',