Fix security vulnerability in CryptoHal

CryptoHal was not checking that the memory heap set by setHeap
was the same one that was actually used for the decrypt call, allowing
the caller to spoof the decrypt call into accessing arbitrary memory.

bug:76221123
test: mediadrmserverpoc included in the bug & GTS media tests
Change-Id: I35214a1a6d0a4b864123e147d1a1adc2377bfbc5