Added missed valid_seq_lengths from FusedSdpa prompt_attention.

[libinta]

Removed workaround for fusedsdpa when query_heads and kv_heads are not the same as FusedSDPA handles it in synapse stack for 1.18
Added missed valid_seq_lengths from FusedSdpa prompt_attention.
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FIX #xxxx (link existing issues this PR will resolve)

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