Move sdk data to target volume when moving app data

Sdk data is an extension of app data. As such, they should exist
together in the same volume.

Bug: b/222034645
Test: atest SdkSandboxStorageTest (see ag/17120883)
Ignore-AOSP-First: End to end test added which exists in internal branch
    only. Will cherry-pick this CL to aosp standalone once it is safely
    merged to internal branch.
Change-Id: I38c97e3d6b1bef18b50f161d5bd99b47c9c1923e