[TASK] Mark BE 'Label' and 'StatusInformation' non-internal

These two classes are part of the new BE tree,
and are documented API for extensions to add
additional labels and status to tree nodes.
They should not be marked `@internal`.

Resolves: #103422
Related: #103186
Related: #103211
Change-Id: I63f466a2726e39058f400599eac70059fb5a6594
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/83520
Reviewed-by: Garvin Hicking <gh@faktor-e.de>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Jasmina Ließmann <minapokhalo+typo3@gmail.com>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: Garvin Hicking <gh@faktor-e.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Jasmina Ließmann <minapokhalo+typo3@gmail.com>

typo3/sysext/backend/Classes/Dto/Tree/Label/Label.php

@@ -17,9 +17,6 @@
 
 namespace TYPO3\CMS\Backend\Dto\Tree\Label;
 
-/**
- * @internal
- */
 final readonly class Label implements \JsonSerializable
 {
     public function __construct(

typo3/sysext/backend/Classes/Dto/Tree/Status/StatusInformation.php

@@ -19,9 +19,6 @@
 
 use TYPO3\CMS\Core\Type\ContextualFeedbackSeverity;
 
-/**
- * @internal
- */
 final readonly class StatusInformation implements \JsonSerializable
 {
     public function __construct(