[Wi-Fi] Support intent extra "wifi_start_connect_ssid" in WifiSettings2

This is a similar code merge of ag/575560 & ag/2588374

Bug: 143328194
Test: manual
      Connect to a Wi-Fi network with wrong network.
      Click the fail notification and launch Wi-Fi picker.
      Check if the editor shows the specified Wi-Fi network.

Change-Id: I5bc8cd0ea51e7baf3d6d2d6d522a3973b74ef930