Remaining non-generated HWIntrinsic tests should be moved to be generated

Currently, there are a number of HWIntrinsic tests that are hand written which leads to maintainability issues and gaps in coverage as compared to the other HWIntrinsic tests (templates have been updated a few times, in order to fix bugs, or add new scenarios, which impacts the vast majority of other HWIntrinsic tests).

It would be beneficial to move them to the same code generation templates as the other HWIntrinsic tests.

category:testing theme:vector-codegen skill-level:intermediate cost:medium impact:medium