fix(windows): release FFmpeg memory and capture native crashes

pkg/download/engine/ffmpeg/memory_other.go

@@ -0,0 +1,7 @@
+//go:build !windows || (!amd64 && !arm64)
+
+package ffmpeg
+
+import "context"
+
+func withLinearMemory(ctx context.Context) (context.Context, func()) { return ctx, func() {} }