Fix NNAPI QoS Deadline test

The Deadline test was directly loading into the field of a std::optional
instead of emplacing, which is undefined behavior. This has been
corrected to emplace.

Additionally, previously the deadline test always checked the tensor
results of the execution. This is changed to only check the results
when the driver reports that the execution completed successfully.

Finally, this CL merges similar switch case statements.

Bug: 149766387
Test: mma
Test: VtsHalNeuralnetworksV1_3TargetTest
Change-Id: I1068fe70e74a12006dea3cdf4ae9da50004ad24b