Option to prepend facet summary label to active filter

I'll have a look at this.
I'm tempted to remove the changes to the Result class and change buildResultTree quite a bit.

I don't know if I can change the MR, so here is a patch.
Let's see what the test bot says.

The last submitted patch, 29: facets_label_to_active_filter-2837729-29.patch, failed testing. View results →
- codesniffer_fixes.patch Interdiff of automated coding standards fixes only.

Let's try this, drupalPostForm was replaced by submitform
I should have checked the tests...

This doesn't work on the latest release.