Resolve aconfig flag deps for Launcher

Only link in framework-declarared aconfig flags for targets that *don't*
reference platform APIs. Targets that do reference platform APIs will
inherit the framework-defined implementation, avoiding runtime classpath
collisions.

Bug: 352519114
Test: m + presubmit
Flag: EXEMPT refactor
Change-Id: I297a3c7929f41b065cc8b9c00d39dfd6ab831c96