fix(android): resolve APK installation failure on Android 16

This commit addresses the "Attempt to get length of null array" error during
APK installation on Android 16 (API 36) by broadening the .NET 10 native
asset misclassification fix in osu.Android.props to include
ResolvedFileToPublish.

Additionally:
- Updates PatchElfPageSize.targets to ensure local libraries in
  osu.Android/libs/ are patched to 16KB page alignment.
- Enables default debug signing for "unsigned" workflow builds to ensure
  generated APKs are installable on modern devices while still being
  distinct from production-signed builds.

Author: google-labs-jules[bot]

.github/workflows/release.yml

@@ -104,7 +104,7 @@ jobs:
           -p:AndroidSigningKeyPass=${{ secrets.ANDROID_SIGNING_KEY_PASSWORD }}
           -p:AndroidSigningStorePass=${{ secrets.ANDROID_SIGNING_STORE_PASSWORD }}
 
-      - name: Build Android APK (unsigned)
+      - name: Build Android APK (signed with default debug key)
         if: steps.keystore.outputs.has_keystore != 'true'
         run: >
           dotnet publish -c Release -p:PublishTrimmed=false -p:AndroidLinkMode=None
@@ -113,7 +113,6 @@ jobs:
           -p:Version=${{ steps.version.outputs.version }}
           -p:ApplicationDisplayVersion=${{ steps.version.outputs.version }}
           -p:ApplicationVersion=${{ github.run_number }}
-          -p:AndroidKeyStore=false
 
       - name: Find APK
         id: find_apk

build/PatchElfPageSize.targets

@@ -265,10 +265,11 @@ finally
     Patches any 64-bit .so in the NuGet cache that has sub-16 KB LOAD alignment.
     The patch is idempotent — already-aligned files are skipped.
   -->
-  <Target Name="PatchAndroidNativeLibPageSize" BeforeTargets="Build">
+    <Target Name="PatchAndroidNativeLibPageSize" BeforeTargets="Build">
     <ItemGroup>
-      <_NuGetNativeLibs Include="$(NuGetPackageRoot)/**/runtimes/android-*/native/*.so" />
+      <_NativeLibs Include="$(NuGetPackageRoot)/**/*.so" />
+      <_NativeLibs Include="$(MSBuildThisFileDirectory)../osu.Android/libs/**/*.so" />
     </ItemGroup>
-    <PatchElfPageSize FilePath="%(Identity)" Condition="'@(_NuGetNativeLibs)' != ''" />
+    <PatchElfPageSize FilePath="%(Identity)" Condition="'@(_NativeLibs)' != ''" />
   </Target>
 </Project>

osu.Android.props

@@ -42,12 +42,16 @@
     <DisableFody>true</DisableFody>
   </PropertyGroup>
 
-  <!-- Fix for .NET 10 Android AOT misclassifying non-managed assets in runtime pack -->
-  <Target Name="FixRuntimePackAssetTypes" AfterTargets="ResolveRuntimePackAssets">
+    <!-- Fix for .NET 10 Android AOT misclassifying non-managed assets in runtime pack.
+       This is critical for Android 16 (API 36) which has stricter manifest/parsing rules. -->
+  <Target Name="FixRuntimePackAssetTypes" AfterTargets="ResolveRuntimePackAssets;ComputeFilesToPublish">
     <ItemGroup>
       <RuntimePackAsset Update="@(RuntimePackAsset)" Condition="'%(Extension)' != '.dll'">
         <AssetType>native</AssetType>
       </RuntimePackAsset>
+      <ResolvedFileToPublish Update="@(ResolvedFileToPublish)" Condition="'%(Extension)' != '.dll' and '%(ResolvedFileToPublish.AssetType)' == ''">
+        <AssetType>native</AssetType>
+      </ResolvedFileToPublish>
     </ItemGroup>
   </Target>
 </Project>