Always add local_task and VMVX if building the compiler. (#9450)
Always add local_task and VMVX if building the compiler. (#9450)

Fixes https://github.com/google/iree/issues/8196

The [`ConstEval`](https://github.com/google/iree/tree/main/compiler/src/iree/compiler/ConstEval) compiler component unconditionally depends on VMVX and the `local-task` HAL driver. The compiler needs _some_ reference implementation available, but we still want to be able to prune the set of built and automatically registered drivers in the runtime.

This is one solution we liked - if the compiler is enabled, force its requirements enabled too.
iree-org/iree,google/iree,google/iree,google/iree,google/iree,google/iree,google/iree,iree-org/iree,iree-org/iree,iree-org/iree,iree-org/iree,google/iree,iree-org/iree,iree-org/iree