[TASK] Add attribute "placeholder" to PasswordViewHelper

Resolves: #81873
Releases: master, 8.7
Change-Id: I99af134d1d6afe14c66de7a950da5f73bee1c1bb
Reviewed-on: https://review.typo3.org/53501


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Philipp Parzer <p.parzer@siwa.at>
Tested-by: Philipp Parzer <p.parzer@siwa.at>
Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Tested-by: Frank Naegler <frank.naegler@typo3.org>
Reviewed-by: Daniel Maier <dani-maier@gmx.de>
Tested-by: Daniel Maier <dani-maier@gmx.de>

typo3/sysext/fluid/Classes/ViewHelpers/Form/PasswordViewHelper.php

@@ -49,6 +49,7 @@ class PasswordViewHelper extends \TYPO3\CMS\Fluid\ViewHelpers\Form\AbstractFormF
         $this->registerTagAttribute(
             'maxlength', 'int', 'The maxlength attribute of the input field (will not be validated)'
         );
+        $this->registerTagAttribute('placeholder', 'string', 'The placeholder of the textfield');
         $this->registerTagAttribute('readonly', 'string', 'The readonly attribute of the input field');
         $this->registerTagAttribute('size', 'int', 'The size of the input field');
         $this->registerArgument(