Implement multiple occupancy paths for various HIP kernel launchers #3366
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Cleaned version of #3300:
Ensure that the occupancy checked in Kokkos_HIP_BlockSize_Deduction.hpp matches the kernel launcher used in Kokkos_HIP_KernelLaunch.hpp, i.e., hip_parallel_launch_local_memory. Previously, if the occupancy was determined for the constant launcher, subtle launch-time resource utilization bugs could be introduced (e.g., not enough LDS for the scatchpad) due to minor differences in the kernels.