Adapt FakeContext for Android 14

This fixes audio for Android 14 developer preview 2.

Fixes #3784 <https://github.com/Genymobile/scrcpy/issues/3784>

Suggested-by: Namelesswonder <Namelesswonder@users.noreply.github.com>

server/src/main/java/com/genymobile/scrcpy/FakeContext.java

@@ -38,4 +38,10 @@ public final class FakeContext extends ContextWrapper {
         builder.setPackageName(PACKAGE_NAME);
         return builder.build();
     }
+
+    // @Override to be added on SDK upgrade for Android 14
+    @SuppressWarnings("unused")
+    public int getDeviceId() {
+        return 0;
+    }
 }