[OpenVINO backend] support tob_k and enable tests

[Mohamed-Ashraf273]

@rkazants
@fchollet
@mattdangerw

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.77%. Comparing base (e233825) to head (f0131f0).

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #21436   +/-   ##
=======================================
  Coverage   82.76%   82.77%           
=======================================
  Files         565      565           
  Lines       55378    55386    +8     
  Branches     8646     8646           
=======================================
+ Hits        45833    45845   +12     
+ Misses       7442     7439    -3     
+ Partials     2103     2102    -1     

Flag	Coverage Δ
keras	82.58% <100.00%> (+<0.01%)	⬆️
keras-jax	63.33% <0.00%> (-0.01%)	⬇️
keras-numpy	58.52% <0.00%> (-0.01%)	⬇️
keras-openvino	34.05% <100.00%> (+0.28%)	⬆️
keras-tensorflow	63.76% <0.00%> (-0.01%)	⬇️
keras-torch	63.37% <0.00%> (-0.01%)	⬇️

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[rkazants]

@fchollet, looks good to me. Recommend to merge

[divyashreepathihalli]

@Mohamed-Ashraf273 can you please resolve the conficts?

[divyashreepathihalli]

/gemini review

[gemini-code-assist]

Code Review

This PR implements top_k for the OpenVINO backend and enables the math operations test suite. The implementation of top_k looks correct.

My main feedback is regarding the test exclusions. While it's a valid strategy to enable a whole test file and then exclude failing tests, I noticed that test_logsumexp is being excluded, even though logsumexp seems to be implemented. This might indicate a bug in the existing implementation. Please see my detailed comment.

Also, there's a small typo in the PR title (tob_k instead of top_k).

[gemini-code-assist]

I see that MathOpsCorrectnessTest::test_logsumexp is being added to the exclusion list. However, the logsumexp function appears to be implemented in the OpenVINO backend (keras/src/backend/openvino/math.py).

Could you clarify why this test is being excluded? If the implementation is correct, this test should be passing. If it's failing, it might indicate a bug in the logsumexp implementation that should be investigated.

[rkazants]

@fchollet, looks good to me. Recommend to merge