Allow AuthContainerView to appear over lock screen.

This change adds the window flag to enable the associated window to
show over the lockscreen.

Test: atest AuthContainerViewTest#testLayoutParams_hasShowWhenLockedFlag
Fixes: 249366032
Change-Id: Id04414b007037eab210f7b80107fefd3b8c4dbce

packages/SystemUI/src/com/android/systemui/biometrics/AuthContainerView.java

@@ -875,6 +875,7 @@ public class AuthContainerView extends LinearLayout
     static WindowManager.LayoutParams getLayoutParams(IBinder windowToken, CharSequence title) {
         final int windowFlags = WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED
                 | WindowManager.LayoutParams.FLAG_SECURE
+                | WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
                 | WindowManager.LayoutParams.FLAG_DIM_BEHIND;
         final WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
                 ViewGroup.LayoutParams.MATCH_PARENT,

packages/SystemUI/tests/src/com/android/systemui/biometrics/AuthContainerViewTest.kt

@@ -321,6 +321,13 @@ class AuthContainerViewTest : SysuiTestCase() {
         assertThat((layoutParams.flags and WindowManager.LayoutParams.FLAG_SECURE) != 0).isTrue()
     }
 
+    @Test
+    fun testLayoutParams_hasShowWhenLockedFlag() {
+        val layoutParams = AuthContainerView.getLayoutParams(windowToken, "")
+        assertThat((layoutParams.flags and WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED) != 0)
+                .isTrue()
+    }
+
     @Test
     fun testLayoutParams_hasDimbehindWindowFlag() {
         val layoutParams = AuthContainerView.getLayoutParams(windowToken, "")