fix: ensure migration tables are dropped before running migrations in tests.

Author: terabytesoftw

tests/TestCase.php

@@ -175,7 +175,14 @@ protected function createDatabase(): void
             $command->dropTable('migration')->execute();
         }
 
-        $this->runMigrate('down', ['all']);
+        if ($this->getDb()->getTableSchema('tree', true) !== null) {
+            $command->dropTable('tree')->execute();
+        }
+
+        if ($this->getDb()->getTableSchema('multiple_tree', true) !== null) {
+            $command->dropTable('multiple_tree')->execute();
+        }
+
         $this->runMigrate('up');
     }