omni: update prebuilt OmniStoreInstaller.apk

update AGP and fix wrong thread access

Change-Id: Ibbec2c8c44de50d13c24445953b799f7efd67855
diff --git a/prebuilt/app/OmniStore/OmniStoreInstaller.apk b/prebuilt/app/OmniStore/OmniStoreInstaller.apk
index 0328745..7ad05a0 100644
--- a/prebuilt/app/OmniStore/OmniStoreInstaller.apk
+++ b/prebuilt/app/OmniStore/OmniStoreInstaller.apk
Binary files differ