fix: Fixed tf.concat for paddle, tensorflow backends

[Sai-Suraj-27]

PR Description

Fixed tf.concat for paddle, tensorflow backends

Related Issue

Closes #28413
Closes #28414

Checklist

• Did you add a function?
• Did you add the tests?
• Did you run your tests and are your tests passing?
• Did pre-commit not fail on any check?
• Did you follow the steps we provided?

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[Ishticode]

Hi @Sai-Suraj-27
Thanks for you continuous efforts.
Could you briefly explain how these two imports supposedly fix tf.concat. I just ran test_tensorlow_concat and it seems to pass anyway.

[Sai-Suraj-27]

Hi @Sai-Suraj-27 Thanks for you continuous efforts. Could you briefly explain how these two imports supposedly fix tf.concat. I just ran test_tensorlow_concat and it seems to pass anyway.

Hey, @Ishticode. I made this PR almost 2 weeks back. So, I don't exactly remember what the error was, but it was happening due to some import problems, and I figured out that adding these 2 missing __init__.py files fixes the failing tests of test_tensorlow_concat.

Regarding the tests passing successfully now, the reason for this, is that @vedpatwardhan made this PR (#28452) which adds these 2 __init__.py files and merged it to main, to release a new version i guess. So, it fixed this failing of test_tensorlow_concat also.

[Ishticode]

In that case we can perhaps close this. Thanks :) @Sai-Suraj-27