fix: TYPO3 v12 compatibility for IconSize and PHPStan backendUriBuilder guard

IconSize enum was introduced in TYPO3 v13; use class_exists() fallback
to Icon::SIZE_SMALL for v12. Add PHPStan ignore for backendUriBuilder
isset() guard used in test contexts.

Signed-off-by: Sebastian Mendel <info@sebastianmendel.de>

Author: CybotTM

Build/phpstan.neon

@@ -16,6 +16,10 @@ parameters:
         -
             identifier: isset.property
             message: '#Property TYPO3\\CMS\\Extbase\\Mvc\\Controller\\ActionController::\$uriBuilder .* in isset\(\) is not nullable#'
+        # BackendUriBuilder isset() guard for test contexts
+        -
+            identifier: isset.property
+            message: '#Property .+TemporalCacheController::\$backendUriBuilder in isset\(\) is not nullable nor uninitialized#'
         # TYPO3 13+ only: IconSize enum does not exist in TYPO3 12
         -
             identifier: class.notFound

Classes/Controller/Backend/TemporalCacheController.php

@@ -18,6 +18,7 @@
 use TYPO3\CMS\Backend\Template\ModuleTemplate;
 use TYPO3\CMS\Backend\Template\ModuleTemplateFactory;
 use TYPO3\CMS\Core\Cache\CacheManager;
+use TYPO3\CMS\Core\Imaging\Icon;
 use TYPO3\CMS\Core\Imaging\IconFactory;
 use TYPO3\CMS\Core\Imaging\IconSize;
 use TYPO3\CMS\Core\Localization\LanguageService;
@@ -298,7 +299,7 @@ private function addDocHeaderButtons(ModuleTemplate $moduleTemplate, string $cur
         $refreshButton = $buttonBar->makeLinkButton()
             ->setHref($this->buildModuleUri($currentAction))
             ->setTitle($this->getLanguageService()->sL('LLL:EXT:core/Resources/Private/Language/locallang_core.xlf:labels.reload'))
-            ->setIcon($this->iconFactory->getIcon('actions-refresh', IconSize::SMALL))
+            ->setIcon($this->iconFactory->getIcon('actions-refresh', class_exists(IconSize::class) ? IconSize::SMALL : Icon::SIZE_SMALL))
             ->setShowLabelText(false);
         $buttonBar->addButton($refreshButton, ButtonBar::BUTTON_POSITION_RIGHT, 1);
 
@@ -316,7 +317,7 @@ private function addDocHeaderButtons(ModuleTemplate $moduleTemplate, string $cur
                 $contentButton = $buttonBar->makeLinkButton()
                     ->setHref($this->buildModuleUri('content'))
                     ->setTitle($this->getLanguageService()->sL('LLL:EXT:nr_temporal_cache/Resources/Private/Language/locallang_mod.xlf:button.view_content'))
-                    ->setIcon($this->iconFactory->getIcon('actions-document-open', IconSize::SMALL))
+                    ->setIcon($this->iconFactory->getIcon('actions-document-open', class_exists(IconSize::class) ? IconSize::SMALL : Icon::SIZE_SMALL))
                     ->setShowLabelText(true);
                 $buttonBar->addButton($contentButton, ButtonBar::BUTTON_POSITION_LEFT, 1);
                 break;