Steps to replicate the issue (include links if applicable):

• Go to an Incubator page for a language with language converter enabled. Example
• Use the language converter and choose a non-Latin script

What happens?:

• The prefix in the title is converted

What should have happened instead?:

• The prefix is language-less, so it should not be converted. The rest of the title should be converted, though.

Software version (skip for WMF-hosted wikis like Wikipedia):

Other information (browser name/version, screenshots, etc.):