Exception when importing with impexp over CLI and powermail is in use

[einpraegsam]

We just used TYPO3 14 with powermail 14.0.0 and https://packagist.org/packages/typo3/cms-impexp.
There is a small tree with some powermail forms and plugins.

Export without problems:

/vendor/bin/typo3 impexp:export --pid=31 --levels=999 --table=_ALL --include-related=_ALL --save-files-outside-export-file --type=xml -- pid31-export

But import fails:

./vendor/bin/typo3 impexp:import -v -- fileadmin/user_upload/_temp_/importexport/pid31-export.xml 134004

With:

PHP Warning: Undefined global variable $TYPO3_REQUEST in /app/app/vendor/in2code/powermail/Classes/Hook/CreateMarker.php line 72

Local workarround is to temporarely change:

# \In2code\Powermail\Hook\CreateMarker::initialize:72
$this->data = [];