[BUGFIX] Make unique id for same checkboxes in different sections

Checkboxes that are placed in sections in BE forms have the same
HTML identifiers. As a result it is not possible to check one checkbox
in one section without affecting the same checkboxes in other sections.
The fix makes identifiers unique.

Resolves: #87429
Releases: master, 9.5
Change-Id: Ia5cd88aecb2af12a83f40d39a8b450f5cde09060
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/62977
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Susanne Moog <look@susi.dev>
Reviewed-by: Susanne Moog <look@susi.dev>

Author: Dmytro Nozdrin

typo3/sysext/backend/Classes/Form/Element/CheckboxElement.php

@@ -19,6 +19,7 @@
 use TYPO3\CMS\Core\Imaging\Icon;
 use TYPO3\CMS\Core\Imaging\IconRegistry;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Core\Utility\StringUtility;
 
 /**
  * Generation of TCEform elements of the type "check"
@@ -181,7 +182,8 @@ protected function renderSingleCheckboxElement($label, $itemCounter, $formElemen
             $numberOfItems,
             implode('', $additionalInformation['fieldChangeFunc'])
         );
-        $checkboxId = $additionalInformation['itemFormElID'] . '_' . $itemCounter;
+        $uniqueId = StringUtility::getUniqueId('_');
+        $checkboxId = $additionalInformation['itemFormElID'] . '_' . $itemCounter . $uniqueId;
 
         $iconIdentifierChecked = !empty($config['items'][$itemCounter]['iconIdentifierChecked']) ? $config['items'][$itemCounter]['iconIdentifierChecked'] : 'actions-check';
         if (!$this->iconRegistry->isRegistered($iconIdentifierChecked)) {

typo3/sysext/backend/Classes/Form/Element/CheckboxLabeledToggleElement.php

@@ -18,6 +18,7 @@
 use TYPO3\CMS\Backend\Form\NodeFactory;
 use TYPO3\CMS\Core\Imaging\IconRegistry;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Core\Utility\StringUtility;
 
 /**
  * Generation of TCEform elements of the type "check"
@@ -180,7 +181,8 @@ protected function renderSingleCheckboxElement($label, $itemCounter, $formElemen
             $numberOfItems,
             implode('', $additionalInformation['fieldChangeFunc'])
         );
-        $checkboxId = $additionalInformation['itemFormElID'] . '_' . $itemCounter;
+        $uniqueId = StringUtility::getUniqueId('_');
+        $checkboxId = $additionalInformation['itemFormElID'] . '_' . $itemCounter . $uniqueId;
         return '
             <div class="checkbox checkbox-type-labeled-toggle' . ($invert ? ' checkbox-invert' : '') . ($inline ? ' checkbox-inline' : '') . (!$disabled ? '' : ' disabled') . '">
                 <input type="checkbox"

typo3/sysext/backend/Classes/Form/Element/CheckboxToggleElement.php

@@ -18,6 +18,7 @@
 use TYPO3\CMS\Backend\Form\NodeFactory;
 use TYPO3\CMS\Core\Imaging\IconRegistry;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Core\Utility\StringUtility;
 
 /**
  * Generation of TCEform elements of the type "check"
@@ -180,7 +181,8 @@ protected function renderSingleCheckboxElement($label, $itemCounter, $formElemen
             $numberOfItems,
             implode('', $additionalInformation['fieldChangeFunc'])
         );
-        $checkboxId = $additionalInformation['itemFormElID'] . '_' . $itemCounter;
+        $uniqueId = StringUtility::getUniqueId('_');
+        $checkboxId = $additionalInformation['itemFormElID'] . '_' . $itemCounter . $uniqueId;
         return '
             <div class="checkbox checkbox-type-toggle' . ($invert ? ' checkbox-invert' : '') . ($inline ? ' checkbox-inline' : '') . (!$disabled ? '' : ' disabled') . '">
                 <input type="checkbox"