Add show emergency button call to biometric prompt

useDefaultSubtitle has to be set explicitly from promptInfo rather than being assumed true

remove subtext for managed profile challenge screen to create space for emergency call button

Test: manually tested
Bug: 286391641
Bug: 286422726
Change-Id: I848e00dcd0013124e59ef711c3615e6773c3d210

src/com/android/settings/wifi/dpp/WifiDppUtils.java

@@ -396,8 +396,7 @@ public class WifiDppUtils {
             final int userId = UserHandle.myUserId();
 
             final BiometricPrompt.Builder builder = new BiometricPrompt.Builder(context)
-                    .setTitle(context.getText(R.string.wifi_dpp_lockscreen_title))
-                    .setUseDefaultSubtitle();
+                    .setTitle(context.getText(R.string.wifi_dpp_lockscreen_title));
 
             if (keyguardManager.isDeviceSecure()) {
                 builder.setDeviceCredentialAllowed(true);