Revert "DatabaseExtension: better detection of single/multiple definitions" [Closes #219]

This reverts commit cadc1a6.

Author: dg

src/Bridges/DatabaseDI/DatabaseExtension.php

@@ -42,12 +42,9 @@ public function __construct(bool $debugMode = false)
 	public function loadConfiguration()
 	{
 		$configs = $this->getConfig();
-		foreach ($configs as $k => $v) {
-			if (is_scalar($v)) {
-				$configs = ['default' => $configs];
-				break;
-			}
-		}
+		$configs = is_array(reset($configs))
+			? $configs
+			: ['default' => $configs];
 
 		$defaults = $this->databaseDefaults;
 		$defaults['autowired'] = true;