RESTRICT AUTOMERGE Restrict Settings Homepage prior to provisioning

Bug: 327749022
Test: manual test
1. factory reset + launch Settings via ADB during Setup -> verify app closes
2. factory reset + bypass Setup + tap Settings icon in launcher -> verify app closes
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:70a5a0fd353cc6203d2926627de93786155ae5bc)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:477d4a8d6ba390ed0f9b150ca271966cd967820a)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:d83f47397e61d5ec04866af20efcb935a58cbdff)
Merged-In: I8cbe38109ebf88a0f68f3917e95468a81c6463c1
Change-Id: I8cbe38109ebf88a0f68f3917e95468a81c6463c1

src/com/android/settings/homepage/SettingsHomepageActivity.java

@@ -175,6 +175,16 @@ public CategoryMixin getCategoryMixin() {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
+        // Ensure device is provisioned in order to access Settings home
+        // TODO(b/331254029): This should later be replaced in favor of an allowlist
+        boolean unprovisioned = android.provider.Settings.Global.getInt(getContentResolver(),
+                android.provider.Settings.Global.DEVICE_PROVISIONED, 0) == 0;
+        if (unprovisioned) {
+            Log.e(TAG, "Device is not provisioned, exiting Settings");
+            finish();
+            return;
+        }
+
         mIsEmbeddingActivityEnabled = ActivityEmbeddingUtils.isEmbeddingActivityEnabled(this);
         if (mIsEmbeddingActivityEnabled) {
             final UserManager um = getSystemService(UserManager.class);