android: routine maintenance - Dec 2025 (#18338)

* Fix `msg` typo

* Fix thread safety in destroy() to support generation abortion in lifecycle callbacks.

* UI polish: stack new message change from below; fix GGUF margin not in view port

* Bug fixes: rare racing condition when main thread updating view and and default thread updating messages at the same time; user input not disabled during generation.

* Bump dependencies' versions; Deprecated outdated dsl usage.

examples/llama.android/app/src/main/res/layout/activity_main.xml

@@ -24,7 +24,7 @@
                 android:id="@+id/gguf"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:layout_margin="16dp"
+                android:padding="16dp"
                 android:text="Selected GGUF model's metadata will show here."
                 style="@style/TextAppearance.MaterialComponents.Body2" />
 
@@ -33,8 +33,7 @@
         <com.google.android.material.divider.MaterialDivider
             android:layout_width="match_parent"
             android:layout_height="2dp"
-            android:layout_marginHorizontal="16dp"
-            android:layout_marginVertical="8dp" />
+            android:layout_marginHorizontal="16dp" />
 
         <androidx.recyclerview.widget.RecyclerView
             android:id="@+id/messages"