Here is the file as zip to be decompressed and placed in build/media_source/vendor/tinymce/langs/ folder to replace the one present.
hu.es5.js.zip

@joomla/cms-maintainers
Most of these lang files are incomplete as they come from 3.x and nobody took care asking TTs to provide new files for their language.
For the version of Tinymce used by J4, the number of lines is 462 while in 3.x it was 230.

Examle above for Hungarian.
Same below for French:

Here is the file as zip to be decompressed and placed in build/media_source/vendor/tinymce/langs/ folder to replace the one present.
hu.es5.js.zip

@Bakual @richard67

That already looks good!

Here is a zip of the file to use for French
fr.es5.js.zip

The files which are ready are here
https://www.tiny.cloud/get-tiny/language-packages/

To whoever will merge these lang packs, WARNING with file names and top of the file line.

In both cases Hungarian and French, I had to modify inside the file to tinymce.addI18n('hu',{ and tinymce.addI18n('fr',{ instead of fr-FR and hu-HU

Therefore these 2 above are corrected.

@joomla/cms-maintainers

I asked TTs in the Private Forum to update and post there the new files.
https://forum.joomla.org/viewtopic.php?f=54&t=988685

Hungarian and French already available there.

See #35599 for the updated language files.
This here can be closed