Investigate low accuracy in XGLM (95.5)

[nemanjagrujic]

https://github.com/tenstorrent/pytorch2.0_ttnn/blob/main/docs/models/XGLM/input_variations.md

[bfilipovicTT]

Softmax is the issue here. Without it accuracy is increased to 98%.
It's the same problem as in CLIP model:

tenstorrent/tt-metal#19781