[audio_core] Decrease wait_for a little bit (#2937)

This fixes an audio problem on Steam Deck.

Signed-off-by: Caio Oliveira <caiooliveirafarias0@gmail.com>
Co-authored-by: MaranBr <maranbr@outlook.com>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2937
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Co-authored-by: Caio Oliveira <caiooliveirafarias0@gmail.com>
Co-committed-by: Caio Oliveira <caiooliveirafarias0@gmail.com>

src/audio_core/sink/sink_stream.cpp

@@ -231,7 +231,7 @@ void SinkStream::WaitFreeSpace(std::stop_token stop_token) {
         return paused || queued_buffers < max_queue_size;
     };
 
-    release_cv.wait_for(lk, std::chrono::milliseconds(10), can_continue);
+    release_cv.wait_for(lk, std::chrono::milliseconds(8), can_continue);
 
     if (queued_buffers > max_queue_size + 10) {
         release_cv.wait(lk, stop_token, can_continue);