Automated Drupal 10 compatibility fixes

I'm providing a patch that appears to work for me on Drupal 10.

Note that the react todo example didn't work, but the block is rendering and the libraries are being added to the page. The React "Hello World" did work as expected.

Please prioritize an update to the module for Drupal 10 readiness.

I have opened a merge request with the D10 upgrades from rector, along with the following additional fixes:

1. The app.root service has been converted to a container param ( https://www.drupal.org/node/3080612 → )
2. In Symfony 4.0+ you must specif icy your service visibility, otherwise it will be private.

I consolidated the patches and the merge request into a new patch that includes all the fixes. Tested on a Drupal9 and Drupal10 site and works as expected on both.

We will probably need to cut a new alpha version before merging this as this will not work on Drupal 8 sites anymore. Wil check on that.

Ok there was an error on a test. So new patch with the test fixed.

Automatically closed - issue fixed for 2 weeks with no activity.

emacoti → closed merge request !4