Reintroduce @FlakyTest to flaky CallFeaturesSettings test

Testing these tests require the phone is on/unlocked, which
doesnt seem to be happening properly for automated tests.

Bug: 145232083
Test: atest TeleServiceTests
Change-Id: I1321454f69b7c1e65336e961e12a633341000b43
diff --git a/tests/src/com/android/phone/CallFeaturesSettingTest.java b/tests/src/com/android/phone/CallFeaturesSettingTest.java
index 0666c56..8f49b97 100644
--- a/tests/src/com/android/phone/CallFeaturesSettingTest.java
+++ b/tests/src/com/android/phone/CallFeaturesSettingTest.java
@@ -28,6 +28,7 @@
 import android.content.Context;
 
 import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.FlakyTest;
 import androidx.test.rule.ActivityTestRule;
 
 import com.android.internal.telephony.IccCard;
@@ -61,6 +62,7 @@
         keepScreenOn(mRule, mActivity);
     }
 
+    @FlakyTest
     @Test
     public void onResume_fdnIsAvailable_shouldShowFdnMenu() throws NoSuchFieldException,
             IllegalAccessException {
@@ -75,6 +77,7 @@
         onView(withText(R.string.fdn)).check(matches(isDisplayed()));
     }
 
+    @FlakyTest
     @Test
     public void onResume_iccCardIsNull_shouldNotShowFdnMenu() throws NoSuchFieldException,
             IllegalAccessException {
@@ -88,6 +91,7 @@
         onView(withText(R.string.fdn)).check(doesNotExist());
     }
 
+    @FlakyTest
     @Test
     public void onResume_fdnIsNotAvailable_shouldNotShowFdnMenu() throws NoSuchFieldException,
             IllegalAccessException {