Change to wrong return type

[snapshotpl]

Subject	Details
Rector version	v0.6.0
PHP version	PHP 7.3.12

Current Behaviour

Rector change collectionCallback return type to iterable.

Minimal PHP Code Causing Issue

<?php 
class Query {
private function collectionCallback(): callable
    {
        return function (int $offset, int $itemCountPerPage): iterable {
            $stmt = $this->connection->executeQuery('SELECT * FROM *');

            while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
                yield EventsEntity::forCollection();
            }
        };
    }
}

    ---------- begin diff ----------
--- Original
+++ New
@@ -24,7 +24,7 @@
         return new Callback($this->collectionCallback(), $this->countCallback());
     }
-    private function collectionCallback(): callable
+    private function collectionCallback(): iterable
     {
         return function (int $offset, int $itemCountPerPage): iterable {
             $sql = 'SELECT id '
    ----------- end diff -----------
Applied rules:
 * Rector\CodingStyle\Rector\Class_\AddArrayDefaultToArrayPropertyRector
 * Rector\TypeDeclaration\Rector\FunctionLike\ReturnTypeDeclarationRector

Expected Behaviour

Nothing changed.

[TomasVotruba]

Thanks for reporting 👍