[BUGFIX] Use correct default value for sys_file_storage|is_public

Use 1 instead of true as default value.

Resolves: #87873
Releases: master, 9.5, 8.7

Change-Id: I6665ebd5b59336a00ea3019cf30ba5c98123a4f6
Reviewed-on: https://review.typo3.org/c/60072
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Benni Mack <benni@typo3.org>

typo3/sysext/core/Configuration/TCA/sys_file_storage.php

@@ -58,7 +58,7 @@
         'is_public' => [
             'label' => 'LLL:EXT:lang/Resources/Private/Language/locallang_tca.xlf:sys_file_storage.is_public',
             'config' => [
-                'default' => true,
+                'default' => 1,
                 'type' => 'user',
                 'userFunc' => \TYPO3\CMS\Core\Resource\Service\UserStorageCapabilityService::class . '->renderIsPublic',
             ]