Disable APP_ARCHIVING flag for specific test

APP_ARCHIVING flag was introduced to control archiving feature in
Settings separately from OS.
The broken test was expecting archiving feature flag be disabled but it
didn't take into account a newly introduced flag which was automatically
rolled out in ag/26270549

Test: AppButtonsTest
Bug: 325632047
Change-Id: I02a1f4e2e2bfa1b85f2d993c4127698c8a6195dc

tests/spa_unit/src/com/android/settings/spa/app/appinfo/AppButtonsTest.kt

@@ -24,6 +24,7 @@ import android.content.pm.Flags
 import android.content.pm.PackageInfo
 import android.content.pm.PackageInstaller
 import android.content.pm.PackageManager
+import android.platform.test.flag.junit.SetFlagsRule
 import androidx.compose.ui.test.assertIsDisplayed
 import androidx.compose.ui.test.assertIsEnabled
 import androidx.compose.ui.test.assertIsNotDisplayed
@@ -34,6 +35,7 @@ import androidx.test.core.app.ApplicationProvider
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import com.android.dx.mockito.inline.extended.ExtendedMockito
 import com.android.settings.R
+import com.android.settings.flags.Flags as SettingsFlags
 import com.android.settingslib.applications.AppUtils
 import com.android.settingslib.spa.testutils.delay
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -54,6 +56,8 @@ class AppButtonsTest {
     @get:Rule
     val composeTestRule = createComposeRule()
 
+    @get:Rule val setFlagsRule: SetFlagsRule = SetFlagsRule()
+
     private lateinit var mockSession: MockitoSession
 
     @Spy
@@ -113,6 +117,7 @@ class AppButtonsTest {
     fun launchButton_displayed_archivingDisabled() {
         whenever(packageManager.getLaunchIntentForPackage(PACKAGE_NAME)).thenReturn(Intent())
         featureFlags.setFlag(Flags.FLAG_ARCHIVING, false)
+        setFlagsRule.disableFlags(SettingsFlags.FLAG_APP_ARCHIVING)
         setContent()
 
         composeTestRule.onNodeWithText(context.getString(R.string.launch_instant_app))