used PHP 8.2 features

Author: dg

src/Database/SqlPreprocessor.php

@@ -242,7 +242,7 @@ private function formatMultiInsert(array $groups): string
 			throw new Nette\InvalidArgumentException('Automaticaly detected multi-insert, but values aren\'t array. If you need try to change ?mode.');
 		}
 
-		$cols = array_keys(is_array($groups[0]) ? $groups[0] : iterator_to_array($groups[0]));
+		$cols = array_keys(iterator_to_array($groups[0]));
 		$vals = [];
 		foreach ($groups as $group) {
 			$rowVals = [];

src/Database/Table/ActiveRow.php

@@ -136,9 +136,7 @@ public function related(string $key, ?string $throughColumn = null): GroupedSele
 	 */
 	public function update(iterable $data): bool
 	{
-		if ($data instanceof \Traversable) {
-			$data = iterator_to_array($data);
-		}
+		$data = iterator_to_array($data);
 
 		$primary = $this->getPrimary();
 		if (!is_array($primary)) {

src/Database/Table/Selection.php

@@ -800,10 +800,7 @@ public function insert(iterable $data): ActiveRow|array|int|bool
 			$return = $this->explorer->query($this->sqlBuilder->buildInsertQuery() . ' ' . $data->getSql(), ...$data->getSqlBuilder()->getParameters());
 
 		} else {
-			if ($data instanceof \Traversable) {
-				$data = iterator_to_array($data);
-			}
-
+			$data = iterator_to_array($data);
 			$return = $this->explorer->query($this->sqlBuilder->buildInsertQuery() . ' ?values', $data);
 		}
 
@@ -873,10 +870,7 @@ public function insert(iterable $data): ActiveRow|array|int|bool
 	 */
 	public function update(iterable $data): int
 	{
-		if ($data instanceof \Traversable) {
-			$data = iterator_to_array($data);
-		}
-
+		$data = iterator_to_array($data);
 		if (!$data) {
 			return 0;
 		}