Allow to use any injection name if there is only 1 database

src/DatabaseManager.php

@@ -135,6 +135,10 @@ public function __construct(DatabaseConfig $config, FactoryInterface $factory =
      */
     public function createInjection(\ReflectionClass $class, string $context = null)
     {
+        if (count($this->config->getDatabases()) === 1) {
+            return $this->database($this->config->getDefaultDatabase());
+        }
+
         // if context is empty default database will be returned
         return $this->database($context);
     }

tests/Database/ManagerTest.php

@@ -115,6 +115,9 @@ public function testInjection(): void
         $db = $container->get(Database::class);
         $this->assertSame($read, $db->getDriver(Database::READ));
         $this->assertSame($write, $db->getDriver(Database::WRITE));
+        $db = $container->get(Database::class, 'somecustomname');
+        $this->assertSame($read, $db->getDriver(Database::READ));
+        $this->assertSame($write, $db->getDriver(Database::WRITE));
     }
 
     public function testGetDrivers(): void