Overwritten backend labels vanish if the element is hidden

[ghost]

TYPO3 v9.5.1, Mask v4.0.0

The labels of form inputs for mask elements is overwritten via (generated) TSConfig, using the user_mask_contentType userFunc to check the CType column. Unfortunately, the QueryBuilder for tt_content has the HiddenRestriction enabled by default, meaning that the content element is not found by a simple query if it is hidden.
As a result, the labels revert to the original value defined in TCA or blank for columns added via mask.

Relevant code:

mask/ext_localconf.php

Line 70 in b6a77c8

$connection = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Core\Database\ConnectionPool::class)->getConnectionForTable('tt_content');

As I am writing the fix, it appears that the same shortcoming exists in user_mask_beLayout, and that in addition to the HiddenRestriction, the StartTimeRestriction and EndTimeRestriction are also added by default, for both pages and tt_content, meaning that editing the element/page outside of the enabled time frame would make mask fields vanish or have the wrong labels.