[myanmar] Mark U+104E MYANMAR SYMBOL AFOREMENTIONED as Consonant

The spec and Uniscribe treat it as consonant in the grammar, but
it's not in IndicSyllableCategory.txt, so fix up.

Test sequence: U+1004,U+103A,U+1039,U+104E

https://bugs.freedesktop.org/show_bug.cgi?id=71948
1 file changed