fix: suppress IL2007 annotation and enable AVIF encoding with libsvtav1enc2

Agent-Logs-Url: https://github.com/winnerspiros/osu/sessions/93be82ca-7d4f-4674-b76a-0758027c1a5f

Co-authored-by: winnerspiros <1675249+winnerspiros@users.noreply.github.com>

Author: Copilot

.github/workflows/release.yml

@@ -224,7 +224,7 @@ jobs:
       - name: Install ffmpeg
         run: |
           sudo apt-get update
-          sudo apt-get install -y ffmpeg
+          sudo apt-get install -y ffmpeg libsvtav1enc2
 
       - name: Clone and optimize all osu-resources from GitHub
         run: |

osu.Android.props

@@ -21,7 +21,13 @@
          unmanaged function pointers, reflection-based handle discovery).
          The default runtime-generated trampolines are slower but proven reliable. -->
     <AndroidEnableMarshalMethods>false</AndroidEnableMarshalMethods>
-    <NoWarn>$(NoWarn);NU1608;XA4301</NoWarn>
+    <!-- IL2007: "Could not resolve assembly" emitted by ILLink when it processes
+         Linker.xml descriptor entries for assemblies that are not yet in the search
+         path at descriptor-parse time (ppy.osu.Framework and ppy.osu.Framework.Android).
+         SuppressTrimAnalysisWarnings=true covers the broader IL2xxx range during the
+         trim pass; IL2007 is added here explicitly so it is also suppressed during the
+         earlier descriptor-validation phase and does not appear as a build annotation. -->
+    <NoWarn>$(NoWarn);NU1608;XA4301;IL2007</NoWarn>
   </PropertyGroup>
 
   <!-- Release-only optimisations.