Change position of isSdkSandbox{Audit,Next} input selectors

aosp/2836178 changed the seinfo parsing logic to
interpret the "complete" attribute as the end of
the seinfo string.

Since we were appending the ":isSdkSandbox*" input
selectors at the end of the seinfo string, those
selectors were being ignored.

This change moves the sandbox selectors to the
middle of the seinfo string, to make sure we parse
them correctly.

Bug: 295861450
Test: atest SdkSandboxAuditTests SdkSandboxNextTests
Change-Id: I14e2f3fba25bb93c136a38d5a4e4e48ab271650c