Add getSdkSandboxApplicationInfoForInstrumentation to SdkSandboxManagerLocal

The API is used to decouple the implementation of the
SdkSandboxManagerService from the instrumentation code living in the
ActivityManagerService.

Bug: 265883691
Test: atest --test-mapping packages/modules/AdServices/sdksandbox:sdksandbox-postsubmit -- --enable-optional-parameterization --enable-parameterized-modules --module-parameter run_on_sdk_sandbox
Change-Id: I248ab16dd29179234656a045303ee190ca0a1692