Change create_tt_tensor_from_py_data to use from_vector

[jjiangTT]

Ticket

#16837

Problem description

Duplicate bespoke code in pytensor.cpp for bfloat handling, should probably use the tensor.cpp version for better maintainability.

What's changed

Call from_vector within pytensor.cpp instead of directly doing bfloat packing in pytensor.cpp, clean up from_span and create_owned_tensor_from_row_major_data helper method in tensor.cpp, add test cases to cover the new path.

Checklist

• Post commit CI passes: https://github.com/tenstorrent/tt-metal/actions/runs/13038902373
• Blackhole Post commit (if applicable)
• Model regression CI testing passes (if applicable)
• Device performance regression CI testing passes (if applicable)
• (For models and ops writers) Full new models tests passes
• New/Existing tests provide coverage for changes: tt-metal/tests/ttnn/unit_tests/test_convert_python_tensor.py

[bbradelTT]

The files seem to have a bunch of un-related changes, such as adding ttnn/cpp/ttnn/operations/data_movement/permute/device/kernels/compute/transpose_xw_tiled.cpp which I'm pretty sure is in main.

Please update the PR appropriately to only have relevant changes.

[bbradelTT]

Will these sections be filled in as part of this PR?

[jjiangTT]

Sorry, it seems like I messed up a few rebases somewhere along the way by accidentally merging which added a bunch of files to my changelog. What's the best way to fix this? Git complains when I try to simply revert the relevant commits.
I guess I could just cherry pick all of my actual commits to main and then delete this branch when the time comes to merge?

[aliuTT]

Cherry-pick this on top of main would work.

[omilyutin-tt]

Nice! Just a few nit comments, the code is almost ready!

I do see your post commit is failing for 2 test cases though (the rest of failures seem to be due to timeouts):

• https://github.com/tenstorrent/tt-metal/actions/runs/12918830342/job/36028847154 (just a single test case in test_tensor_creation_with_memory_config)
• https://github.com/tenstorrent/tt-metal/actions/runs/12918830342/job/36028840916 (I think this is the test you added here?)