wrong schema hadTable and getTable return when table name contains quote

wrong schema hadTable and getTable return when table name contains quote.

I bump into this when useing a ManyToMany replation and one Entity was named Group with tablename `Group`
In RemoveNamespacedAssets the FK from The Join Table to Group was removed because in acceptForeignKey() $this->schema->hasTable($fkConstraint->getForeignTableName()) returned false