[Status Bar] WifiTrackerLib: Use WifiEntry.title for SSID.

More information in the bug description about why we should be able to
use `title` for SSID.

Bug: 292534484
Test: flag on, switch wifi networks a few times, `adb shell dumpsys
activity service com.android.systemui/.SystemUIService
WifiTrackerLibTableLog` -> verify table has the wifi network names
listed for `ssid`
Test: atest WifiRepositoryViaTrackerLibTest

Change-Id: I10921ebf76e3e60cb6d626353886d56b791890e4