message: docs(known-issues): add plugin "@babel/plugin-proposal-class-properties" to babel section
diff: @@ -45,6 +45,7 @@ If Babel is still needed, then read [Babel TypeScript preset](https://babeljs.io
  - To reproduce the typescript decorators (`experimentalDecorators`), use [`@babel/plugin-proposal-decorators`](https://babeljs.io/docs/en/babel-plugin-proposal-decorators)
  - To reproduce the decorator metadata output (`emitDecoratorMetadata`), use [`babel-plugin-transform-typescript-metadata`](https://github.com/leonardfactory/babel-plugin-transform-typescript-metadata)
  +- Plugin [`@babel/plugin-proposal-class-properties`](https://babeljs.io/docs/en/babel-plugin-proposal-class-properties) is required to solve the error `Syntax error, Definitely assigned fields cannot be initialized here, but only in the constructor` which would come with using decorators (legacy / stage 1) nowdays
  :::info
  `emitDecoratorMetadata` is not strictly needed, see [Use Without `emitDecoratorMetadata`](./use-without-emitDecoratorMetadata.md)
  @@ -55,6 +56,7 @@ module.exports = {
  plugins: [
  ['@babel/plugin-proposal-decorators', { legacy: true }],
  'babel-plugin-transform-typescript-metadata',
  + ['@babel/plugin-proposal-class-properties', { loose: true }],
  ]
  }
  ```
  