Add warning log message when sync disabled is on

Test: m
Bug: 346334378
Change-Id: I15e3af68d5e8167f6658485c2fac7e3f12a5a436
Flag: EXEMPT refactor
diff --git a/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java b/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
index d54236e..54f0d7a 100644
--- a/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
+++ b/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java
@@ -1189,6 +1189,8 @@
 
         synchronized (mLock) {
             if (getSyncDisabledModeConfigLocked() != SYNC_DISABLED_MODE_NONE) {
+                Slog.v(LOG_TAG, "did not write settings for prefix '"
+                                + prefix + "' because sync is disabled");
                 return SET_ALL_RESULT_DISABLED;
             }
             final int key = makeKey(SETTINGS_TYPE_CONFIG, UserHandle.USER_SYSTEM);