Fix AttributionSource usage in WifiRtt

Avoid creating AttributionSource outside of Binder thread.

Bug: 267231571
Bug: 244465118
Test: atest com.android.server.wifi
Change-Id: Ie8c41292f28f40e44d486db4e1eec688425196c8
Merged-In: Ie8c41292f28f40e44d486db4e1eec688425196c8
(cherry picked from commit 0317c109ab6bb2ebcf4a3391279b51a77677bd8e)
2 files changed