Qt/Harfbuzz

Bengali Character u09c7 has init feature, it should be applied only when it will be at the start of word or line, but this feature is applied even only it is in the middle of word, result in invalid rendering.

নে 0x09a8,0x09c7 - correct since 09c7 at the initial position of the word
ননে 0x09a8,0x09a8,0x09c7 - init should not be applied since 09c7 is at the middle of work