Rename SupplementalProcess to SdkSandbox

Ignore-AOSP-First: code not in AOSP yet
Bug: 220320098
Test: presubmit
Change-Id: I727342675f6817d4dced431b4ef57e909c02eb5a
Merged-In: I727342675f6817d4dced431b4ef57e909c02eb5a
(cherry picked from commit bad7cd0fd7ef149a801c165dc3ca4a3743054a6c)
1 file changed