Mark flaky flicker assertion

This is currently flaky as sometimes all the surfaces become invisible
when going into AOD. To unblock presubmit, this will be marked flaky
until a fix is submitted.

Test: atest
  FlickerTestsIme2:com.android.server.wm.flicker.ime.ShowImeOnUnlockScreenTest
Bug: 338178020
Flag: NONE
Change-Id: I652b470407c7efbf88f9ea8b48a4491ae0b726e9

tests/FlickerTests/IME/src/com/android/server/wm/flicker/ime/ShowImeOnUnlockScreenTest.kt

@@ -24,6 +24,7 @@ import android.tools.flicker.legacy.FlickerBuilder
 import android.tools.flicker.legacy.LegacyFlickerTest
 import android.tools.flicker.legacy.LegacyFlickerTestFactory
 import android.tools.traces.component.ComponentNameMatcher
+import androidx.test.filters.FlakyTest
 import com.android.server.wm.flicker.BaseTest
 import com.android.server.wm.flicker.helpers.ImeAppHelper
 import org.junit.FixMethodOrder
@@ -90,6 +91,11 @@ class ShowImeOnUnlockScreenTest(flicker: LegacyFlickerTest) : BaseTest(flicker)
     @Ignore("Not applicable to this CUJ. Display turns off during transition")
     override fun taskBarWindowIsAlwaysVisible() {}
 
+    @FlakyTest(bugId = 338178020)
+    @Test
+    override fun visibleWindowsShownMoreThanOneConsecutiveEntry() =
+        super.visibleWindowsShownMoreThanOneConsecutiveEntry()
+
     companion object {
         @Parameterized.Parameters(name = "{0}")
         @JvmStatic