filterBundles always sets the value to an empty array

Problem/Motivation

Field value in filterBundles method will always be empty because it checks the bundle against the array keys of $field_config['selected_bundles'] and therefore the whole functionality of the module will be broken.

Steps to reproduce

I'm using Drupal 9.4.8, Search api 1.27.0, and facets 2.0.5.
Following the instructions provided in the readme file with the above versions will reproduce the issue.

Proposed resolution

use in_array() instead of array_key_exists.

I added a patch that does the following:

• replace array_key_exists with in_array().
• remove unused variable $convert_labels.
• prevent access to $field_config['field_status'] when $field_config is empty.