Count the filler in the APK's bundled-model array

The unpack list gained migan-512.onnx without its length following;
nothing on the desktop compiles that crate, and the first Android build
of 0.13.0 stopped there.

apps/darkroom-android/src/lib.rs

@@ -333,7 +333,7 @@ fn unpack_bundled_models(app: &slint::android::AndroidApp) {
     // The int8 forms beside the three detectors are what the Hexagon runs
     // (docs/inference.md §5); the engine loads the sibling when the probe
     // chose that rung and ignores it otherwise.
-    const BUNDLED: [(&std::ffi::CStr, &str); 13] = [
+    const BUNDLED: [(&std::ffi::CStr, &str); 14] = [
         (c"models/scrfd_500m_640.onnx", "scrfd_500m_640.onnx"),
         (
             c"models/scrfd_500m_640.int8.onnx",