Fix PHP 8.4 deprecation warnings for implicitly nullable parameters

- Container.stub: Make $filterType explicitly nullable (?string)
- Selection.stub: Make $offset explicitly nullable (?int)

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: 2 people

stubs/ComponentModel/Container.stub

@@ -10,7 +10,7 @@ class Container extends Component implements IContainer
 	 * @phpstan-param null|class-string<T> $filterType
 	 * @phpstan-return ($filterType is null ? \Iterator<int|string, \Nette\ComponentModel\IComponent> : \Iterator<int|string, T>)
 	 */
-	public function getComponents(bool $deep = false, string $filterType = null): \Iterator
+	public function getComponents(bool $deep = false, ?string $filterType = null): \Iterator
 	{
 		// nothing
 	}

stubs/Database/Table/Selection.stub

@@ -14,7 +14,7 @@ class Selection implements \Iterator, \ArrayAccess
      * @phpstan-param positive-int|0|null $offset
      * @return static<T>
      */
-    public function limit(?int $limit, int $offset = null)
+    public function limit(?int $limit, ?int $offset = null)
     {
     }