Fix playwright mental model, don't make me psycho, thanks (#5680)

* Fix flakey tests with new toolbar.exitSketch

* tsc && lint && fmt

* Disable pw electron thing again

* Unfrig Playwright-Electron a ton; fix another ton of flakes.

* More deflaky

* Fix a ton of tests and playwright related hell

* Run jess's magic incantation to build rust kcl things

* yarn tsc

* yarn lint

* yarn fmt

* Remove double logs

* Revert to old settings spreads momentarily

* Expect error *in the fixtureSetup*, does not circumvent typechecking for regular usage

* Fix unit tests

e2e/playwright/file-tree.spec.ts

@@ -158,11 +158,14 @@ test.describe('when using the file tree to', () => {
       await createNewFile('lee')
 
       await test.step('Postcondition: there are 5 new lee-*.kcl files', async () => {
-        await expect(
-          page
-            .locator('[data-testid="file-pane-scroll-container"] button')
-            .filter({ hasText: /lee[-]?[0-5]?/ })
-        ).toHaveCount(5)
+        await expect
+          .poll(() =>
+            page
+              .locator('[data-testid="file-pane-scroll-container"] button')
+              .filter({ hasText: /lee[-]?[0-5]?/ })
+              .count()
+          )
+          .toEqual(5)
       })
     }
   )