Expand Bengali graphemes_test to cover non-NFC strings.
Expand Bengali graphemes_test to cover non-NFC strings.

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