Update PaginatorComponent.php

controller:
```
$this->paginate['conditions'] = ['field_name' => 5];
$this->paginate();
```

results to:
```
WHERE (field_name = 5 AND field_name = 5)
```
the reason is pretty simple:
both $object->find and $query->applyOptions($options) add where(['field_name' => 5])

I am not quite sure if this change breaks anything but at least it solves this issue.

As a workaround I did the following:
```
$conditions = $this->paginate['conditions'];
unset($this->paginate['conditions']);
$paginationData = $this->paginate($this->{$this->modelClass}->find()->where($conditions));
```
this works because not the model object but a Query object is passed therefore $object->find is not executed.