[HAL/AMDGPU] Compact dynamic binding pointer replay

Dynamic command-buffer replay was still caching resolved binding pointers in a sparse array indexed by the original queue_execute binding slot. That kept replay scratch storage tied to the command buffer maximum binding slot even after finalization had built a compact per-block dynamic slot sidecar.

Rewrite dynamic dispatch binding-source slots at command-buffer finalization to dense sidecar ordinals. The sidecar continues to store the original queue_execute binding slots, while host replay resolves only those used slots into a compact pointer table consumed by both the base and profiling block processors.

Static and fully prepublished blocks keep the same no-sidecar path, while dynamic replay gets a denser host-side representation for future queue-upload and device-fixup publication.