Add static asserts to functions using MixedTyped

This makes it easier to find all the places that need to be changed
after adding a new type to MixedTyped.

Test: VtsHalNeuralnetworksV1_2TargetTest
Change-Id: I92867de6574ec6dc1a17e30d889c79501ea93063
Merged-In: I92867de6574ec6dc1a17e30d889c79501ea93063
(cherry picked from commit 9b490f48)