Merge "Renamed thread_enabled flag to thread_enabled_platform" into main

core/api/current.txt

core/api/system-current.txt

core/java/android/content/Context.java

core/java/android/content/pm/PackageManager.java

core/java/android/net/thread/flags.aconfig

core/java/android/os/UserManager.java

core/res/AndroidManifest.xml