Update Status Bar with Badged Wifi Icons.

This change inserts badged wifi icons into the status bar to indicate
historical network strength. The existing callback handler was modified
to explicitly pass the drawable as currently the icon is a rendered from
two separate resources, composited together in a LayeredDrawable.

Badging is controlled by Settings.Global.NETWORK_RECOMMENDATIONS_ENABLED
and can be enabled from the Wifi Settings page.

Bug: 34056846
Test: runtest --path
frameworks/base/packages/SystemUI/tests/src/com/android/systemui/statusbar/policy/NetworkControllerWifiTest.java
Change-Id: I33b736d4543e380887513cbb5937f49945794c09