Reset master sync state

Signed-off-by: Sunik Kupfer <kupfer@bitfire.at>

app/src/androidTest/kotlin/at/bitfire/davdroid/sync/SyncAdapterServicesTest.kt

@@ -66,6 +66,8 @@ class SyncAdapterServicesTest {
 
     lateinit var account: Account
 
+    private var masterSyncStateBeforeTest = ContentResolver.getMasterSyncAutomatically()
+
     @Before
     fun setUp() {
         hiltRule.inject()
@@ -80,6 +82,7 @@ class SyncAdapterServicesTest {
 
     @After
     fun tearDown() {
+        ContentResolver.setMasterSyncAutomatically(masterSyncStateBeforeTest)
         TestAccount.remove(account)
     }