Fix memory leak in SuperPMI (#34523)

Fix memory leak in SuperPMI (#34523)

Introduced by change to Heap APIs. Also fixes a long-existing
memory leak on Linux.

Introduce a small, simple class to keep track of memory allocations
associated with the CompileResult that we need to free. In the replay
case, SuperPMI allocates these (such as for the JIT calling allocMem).
In the case of collection, the VM allocates memory for allocMem (and related),
so that memory doesn't need to be tracked.