servicemanager: set consistent flags for self-reg SM has special flags set to become a context object, but these were not set when it registers as itself. Bug: 382775095 Test: boot w/ harsher checks (cherry picked from https://googleplex-android-review.googlesource.com/q/commit:6c86b6c926ab527eb88804711beb4bd09e348e06) Merged-In: I0fb567cbcca67a2fc6c088f652c8af570b8d7e53 Change-Id: I0fb567cbcca67a2fc6c088f652c8af570b8d7e53