Story
When I need to call convertTitle and convertNamespace I want to use it from ConverterHelper, so that it's possible to deprecate them from LanguageConveter
Context
ConverterHelper was introduced as part of T253849 to make LanguageConverter simpler, so as of now all clients should call convertTitle and convertNamespace from ConverterHelper
Expected Result
- All calls to convertTitle and convertNamespace should be linked to ConverterHelper
- LanguageConverter ::convertTitleconvertNamespace and ::convertNamespace should be marked as deprecated
- RELEASE_NOTES should be updated accordingly