Add divider line in Preference for scan QR code button and share hotspot button

Use com.android.settingslib.R.layout.preference_two_target in
WifiTetherSsidPreference to add divider line.

Bug: 128940862
Test: manual test
Change-Id: I46dabcee31a91b68b8c2e57c9840a59f8a1be304
2 files changed