Add failing test cases for Sinhala zero-width removal.
Add failing test cases for Sinhala zero-width removal.

googlei18n/language-resources,google/language-resources,googlei18n/language-resources,googlei18n/language-resources,google/language-resources,googlei18n/language-resources,googlei18n/language-resources,googlei18n/language-resources,google/language-resources,google/language-resources,google/language-resources,google/language-resources