[PR] Fix constant islands handling

Summary:
After the "Allocate memory for constant islands on-demand" patch there
are couple of problems found in constant islands handling:
1. When creating constant island dependency we need to check that we
already allocated IslandInfo for BF.
2. In ADRRelaxationPass we need to set constant island check under new
hasIslandsInfo condition.
3. In binaryemitter we need to replace hasConstantIsland with
hasIslandsInfo check since originally the BF might not have constant
island, but might have access to other's BF CI.

Vladislav Khmelevsky,
Advanced Software Technology Lab, Huawei

(cherry picked from FBD31737935)