Merge changes from topics "aidl-rust-null-parcelable-flags", "aidl-rust-parcelable-holder", "aidl-rust-parcelable-trait" am: 2c62f367eb

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1819036

Change-Id: I66e0b041f6f26e16df7d86f7f15454b0c16a06db