Fix stale decorations (#4876)

* test changes

* fix decoration not updating

* Add changeset

* Fix lint issues

* Tests with earlier version of Node.js

* Bump node version on CI

The base typescript config uses ESNext as target, so presumably the
latest node should be used.

Co-authored-by: Dylan Schiemann <dylan@dojotoolkit.org>

jest.config.js

@@ -1,5 +1,12 @@
 const config = {
   testMatch: ['<rootDir>/packages/slate-react/test/**/*.{js,ts,tsx,jsx}'],
+  preset: 'ts-jest',
+  globals: {
+    'ts-jest': {
+      tsconfig: '<rootDir>/packages/slate-react/tsconfig.json',
+    },
+  },
+  testEnvironment: 'jsdom',
 }
 
 module.exports = config