adb: fix the initial adbd state in AdbService

mIsAdbUsbEnabled and mIsAdbWifiEnabled are owned by
setAdbEnabled, we should not write directly to them.

Bug: 402444824
Test: v2/al-eng/al_dts_hw_postsubmit
Flag: EXEMPT cleanup
Change-Id: I0fcb783eeebc34034df4e2e4b61d755f026749bd
Signed-off-by: Roman Kiryanov <rkir@google.com>