Fixes: Vietnamese tone position in triphtongs with no diacritics
Fixes: Vietnamese tone position in triphtongs with no diacritics

RevBy: TrustMe
Details: In tripthongs without diacritics, the tone mark should fall on the
middle vowel.

RHawkeyed/plugins,KDE/plasma-maliit-plugins,RHawkeyed/plugins,develersrl/maliit-demo-qml,develersrl/maliit-demo-qml,develersrl/maliit-demo-qml,KDE/plasma-maliit-plugins,maliit/plugins,maliit/plugins,RHawkeyed/plugins,RHawkeyed/plugins,maliit/plugins,KDE/plasma-maliit-plugins,RHawkeyed/plugins,develersrl/maliit-demo-qml,KDE/plasma-maliit-plugins,maliit/plugins