[BUGFIX] Fix hide/unhide inline control for a special case

In case an inline field doesn't define the "disabled" column
in its "showitem" list, a hidden checkbox is now rendered in
the expanded state. This is the same checkbox, which is
rendered, when the inline item is initially visited in the
collapsed state.

Resolves: #98353
Releases: main, 11.5
Change-Id: I9b8b65c359f34aff9c6bad64e0d7b0870cbd259d
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/75651
Tested-by: core-ci <typo3@b13.com>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>

typo3/sysext/backend/Classes/Form/Container/InlineRecordContainer.php

@@ -153,12 +153,12 @@ public function render()
                 // Set additional field for processing for saving
                 $html .= '<input type="hidden" name="cmd' . htmlspecialchars($appendFormFieldNames)
                     . '[delete]" value="1" disabled="disabled" />';
-                if (!$data['isInlineChildExpanded'] && !empty($hiddenField)) {
+                if (!empty($hiddenField) && (!$data['isInlineChildExpanded'] || !in_array($hiddenField, $data['columnsToProcess'], true))) {
                     $checked = !empty($record[$hiddenField]) ? ' checked="checked"' : '';
-                    $html .= '<input type="checkbox" data-formengine-input-name="data'
+                    $html .= '<input type="checkbox" class="d-none" data-formengine-input-name="data'
                         . htmlspecialchars($appendFormFieldNames)
                         . '[' . htmlspecialchars($hiddenField) . ']" value="1"' . $checked . ' />';
-                    $html .= '<input type="input" name="data' . htmlspecialchars($appendFormFieldNames)
+                    $html .= '<input type="input" class="d-none" name="data' . htmlspecialchars($appendFormFieldNames)
                         . '[' . htmlspecialchars($hiddenField) . ']" value="' . htmlspecialchars($record[$hiddenField]) . '" />';
                 }
             }