### Problem description
As described in issue #1841, there was a duplicate on the `Chinese
(Simplified)` translation.
After closer inspection, this came from an i18n file (Script loader,
specifically) having a bad ISO code (`zh_CN` instead of the expected
`zh-CN`).
This also caused a big impact on end users, as loading the latter
(`zh_CN`) would cause the whole UI to be displayed in English (the
fallback language), and only the script loader being translated into
Chinese.
### Implementation description
Fixed the i18n code in the Script loader file.
### Additional things
Closes issue #1841
Signed-off-by: BioTheWolff <47079795+BioTheWolff@users.noreply.github.com>
b8ba980a20