[Wi-Fi] Default enable WifiTracker2 feature flag

After the feature flag default enabled, Wi-Fi Settings
will use it in Wi-Fi picker / Wi-Fi detal / Saved Wi-Fi network
activities.

Bug: 70983952
Test: compile
Change-Id: Ia88ecd7b8f9eb5962c18c772cc130dc1153bfa1e
1 file changed