Fix minor TODOs in HIDL-AIDL translation shim am: 9c922979d2 am: edd5a0b119 am: fe0b32992f am: 2bc3674685

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1937405

Change-Id: I012ed8302b5ef50099f943851cb0da9008ea7d71