texlive: make updmap actually regenerate (#76826) (#76867)

* texlive: make updmap actually regenerate (#76826)

The --syncwithtrees flag only updates the config files, so run it
again without --syncwithtrees to generate the actual map files.

* ! fixup

* ! fixup

Co-authored-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>