Experimental chunking optimisation and other performance improvements (#5871)

* Chunking optimization

* Fix comments

* Remove redundant `insertionsMinusRemovals` variable

* Fix typo

* Unblock Netlify builds

* Add placeholder

* Upgrade Playwright (fixes crash when debugging)

* Fix `autoFocus` not working

* Fix huge document test

* Fix the previous issue without changing `useSlateSelector`

* Retry `test:integration`

* Re-implement `useSlateWithV`

* Retry `test:integration`

* Update docs

* Update JS examples to match TS examples

* Upload Playwright's `test-results` directory in CI to access traces

* Change trace mode to `retain-on-first-failure`

* Fix: `Locator.fill(text)` is flaky on Editable

* Add changesets

* Increase minimum `slate-dom` version

* Update changeset

* Update 09-performance.md

* Deprecate the `useSlateWithV` hook

* Fix errors and improve clarity in 09-performance.md

* Minimum `slate-dom` version is now 0.116

* Update `yarn.lock`

jest.config.js

@@ -10,6 +10,16 @@ const config = {
     ],
   },
   testEnvironment: 'jsdom',
+  collectCoverage: true,
+  collectCoverageFrom: ['./packages/slate-react/src/chunking/*'],
+  coverageThreshold: {
+    './packages/slate-react/src/chunking/*': {
+      branches: 100,
+      functions: 100,
+      lines: 100,
+      statements: 100,
+    },
+  },
 }
 
 module.exports = config