Use type traits from __hip_internal namespace in HIPRTC kernels

[satyanveshd]

Fixes SWDEV-541185.

As part of 7.0 HIP breaking changes, type traits definitions defined in std namespace in HIPRTC headers have been moved to __hip_internal namespace to avoid conflicts with C++ standard type traits.

So, this change modifies the type traits to use __hip_internal namespace in HIPRTC kernels.

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Jenkins build for a4633b418d4b65432d0eaf6bad0f7084a0d365ac commit finished as FAILURE Links: Blue Ocean view / Build artifacts

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Jenkins build for a4633b418d4b65432d0eaf6bad0f7084a0d365ac commit is in progress Links: Blue Ocean view / Build artifacts