Fix php8.2 deprecated warning when using bridge specific configurations (#3587)

* Fix php8.2 deprecated warning

Fix php8.2 warning: `Deprecated: Creation of dynamic property is deprecated`

* fix

* refactor: remove unused method

---------

Co-authored-by: Dag <me@dvikan.no>

lib/BridgeAbstract.php

@@ -58,8 +58,6 @@ abstract class BridgeAbstract implements BridgeInterface
 
     /**
      * Configuration for the bridge
-     *
-     * Use {@see BridgeAbstract::getConfiguration()} to read this parameter
      */
     const CONFIGURATION = [];
 
@@ -113,6 +111,11 @@ abstract class BridgeAbstract implements BridgeInterface
      */
     protected $queriedContext = '';
 
+    /**
+     * Holds the list of bridge-specific configurations from config.ini.php, used by the bridge.
+     */
+    private array $configuration = [];
+
     /** {@inheritdoc} */
     public function getItems()
     {
@@ -365,12 +368,6 @@ abstract class BridgeAbstract implements BridgeInterface
         return static::URI . '/favicon.ico';
     }
 
-    /** {@inheritdoc} */
-    public function getConfiguration()
-    {
-        return static::CONFIGURATION;
-    }
-
     /** {@inheritdoc} */
     public function getParameters()
     {

lib/BridgeInterface.php

@@ -60,11 +60,6 @@ interface BridgeInterface
      */
     public function collectData();
 
-    /**
-    * Get the user's supplied configuration for the bridge
-    */
-    public function getConfiguration();
-
     /**
      * Returns the value for the selected configuration
      *