[Thread] move ot-daemon into com.android.tethering

Test: build
Bug: 296211911
(cherry picked from https://android-review.googlesource.com/q/commit:72deb0fe8a23cbbfe52a89924aa335bfad762762)

Change-Id: I52320be04ceb9855a37db59b7ef961d2c8555357
diff --git a/threadnetwork/aidl/Android.bp b/threadnetwork/aidl/Android.bp
index 91c43c5..5aa16a7 100644
--- a/threadnetwork/aidl/Android.bp
+++ b/threadnetwork/aidl/Android.bp
@@ -15,9 +15,12 @@
         ndk: {
             apex_available: [
                 "//apex_available:platform",
+                "com.android.tethering",
+                // Keep the threadnetwork apex to make it buildable on udc-mainline-prod.
+                // TODO: remove it after moving ot-daemon into tethering.
                 "com.android.threadnetwork",
             ],
-            min_sdk_version: "33",
+            min_sdk_version: "30",
         },
     },
 }