Fixed the failing tests for the acos method in PyTorch frontend.

[he11owthere]

closes #20773

[github-actions]

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[vedpatwardhan]

Hey @he11owthere, actually the function supports bfloat16 but there's an issue in the ivy.Array.__repr__ method which is currently being fixed. Could you please close this and the other PRs created for a similar reason?
Thanks for helping us spot the issue, the ivy.Array.__repr__ method is the root cause, all these functions should work as expected once that's fixed 😄

[he11owthere]

@vedpatwardhan Alright I am closing it right away along with the other PRs which are inappropriate by checking if the data types are supported by the original PyTorch functions. I will try my best to see if there is any way to fix the function you mentioned above. Sorry if I caused any problem to the codebase and will try my best to be helpful. Thank you very much! 😊