[BUGFIX] uft8 encode text to allow special chars in PDF metadata

This encodes the PDF metadata to UTF-8 to ensure that special chars
like æ ø å ü ö ä are allowed without cutting of the metadata text.

Resolves: #80085
Releases: main, 11.5, 10.4
Change-Id: I02b0730dd659b54c0d8c7186a2089419bd56d2a2
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/76861


Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Benni Mack <benni@typo3.org>