Update StringUtil#formatElapsedTime method (2/3)

- Update the usage and the test case
 - Update discharging string to follow new string doc

Bug: 183689347
Test: make RunSettingsRoboTests
Change-Id: I1e14e7da8cb02755d8cf6e12626a0d94fad87121

src/com/android/settings/bluetooth/AdvancedBluetoothDetailsHeaderController.java

@@ -364,7 +364,12 @@ public class AdvancedBluetoothDetailsHeaderController extends BasePreferenceCont
             final TextView textView = linearLayout.findViewById(R.id.bt_battery_prediction);
             if (estimateReady == 1) {
                 textView.setVisibility(View.VISIBLE);
-                textView.setText(StringUtil.formatElapsedTime(mContext, batteryEstimate, false));
+                textView.setText(
+                        StringUtil.formatElapsedTime(
+                                mContext,
+                                batteryEstimate,
+                                /* withSeconds */ false,
+                                /* collapseTimeUnit */  false));
             } else {
                 textView.setVisibility(View.GONE);
             }