Fix l10n util, bundle gettext (#18472)
Fixup of #18270
Summary of the issue:
We use gettext in l10nUtil now, but it wasn't bundled correctly into
NVDA
Description of user facing changes:
l10nutil is fixed for translators
Description of development approach:
bundle gettext into nvda distributions
Testing strategy:
test with nvda build
Known issues with pull request:
none
