convert : fix RWKV v6 model conversion (#10913)
* Enable --no-context-shift for llama-perplexity example
Signed-off-by: Molly Sophia <mollysophia379@gmail.com>
* RWKV 6: Fix error in ggml_cuda_op_bin_bcast
Signed-off-by: Molly Sophia <mollysophia379@gmail.com>
---------
Signed-off-by: Molly Sophia <mollysophia379@gmail.com>
