Migrate to Coil 3.5.0

The tree pins prebuilt_libs_coil at 3.5.0 (coil3.* packages); move the
three image-loading screens to coil3.compose and add coil-network-okhttp
— Coil 3 core ships no network fetcher, so http(s) image URLs need it
(it self-registers through ServiceLoader). Gradle catalog bumped to the
matching io.coil-kt.coil3 coordinates.

Android.bp

@@ -64,8 +64,11 @@ android_app {
         // Gradle-only; defining an import here would collide with that module)
         "android-device-info",
 
-        // Images — prebuilts/application_libs/coil (pulls okhttp3/okio/
-        // coroutines transitively via the import's static_libs)
+        // Images — Coil 3 from prebuilts/application_libs/coil. The network
+        // module is mandatory for http(s) image URLs (Coil 3 core ships no
+        // fetcher; the okhttp one self-registers via ServiceLoader) and pulls
+        // okhttp3/okio/coroutines transitively via the import's static_libs.
         "coil-compose",
+        "coil-network-okhttp",
     ],
 }