Exposed forms in a block are not currently updated when Ajax filtering is executed

The Needs Review Queue Bot → tested this issue. It either no longer applies to Drupal core, or fails the Drupal core commit checks. Therefore, this issue status is now "Needs work".

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Re-rolled it against 11.x, also applies on 10.1.x.

Was previously tagged for tests which still need to happen.

Re-rolled patch for 10.2.x and added test coverage.

Tests should be added to the MR. But it needs to be cleaned up as there are now a mix of patches and MRs with no explanation or interdiffs between them.

Also issue summary should follow standard issue template.

New patch starting from comment 42 ✨ Exposed forms in a block are not currently updated when Ajax filtering is executed Needs work but with adding the missing use.

Error: Class "Drupal\views\Controller\RenderContext" not found in Drupal\views\Controller\ViewAjaxController->ajaxView() (regel 222 van /var/app/web/core/modules/views/src/Controller/ViewAjaxController.php).
Error: Class "Drupal\views\Controller\BubbleableMetadata" not found in Drupal\views\Controller\ViewAjaxController->ajaxView()

There are instances where the form ID can have uniquifying suffix, so here is a change to account for that.
The whole approach looks fragile to me as in theory there can be multiple blocks on the page.
Also I have problem with the facets as the parameter "exposed_form_display" does not get attached, as commented in #28. What is the use case for it?

I've fixed bug with empty "exposed_form_display" mentioned in #45

Noticed bug. when after last the patch the exposed filter block has been refreshed - the exposed form is not submitted by Ajax second time - with page reload.

I've improved a little the exposed form selector to be more precise.

And updated selector in javascript in case if there are multiple exposed forms for the same view on one page