audio_core: ignore renderer wait when stream is paused

src/audio_core/sink/sink_stream.h

@@ -213,6 +213,12 @@ public:
      */
     void WaitFreeSpace(std::stop_token stop_token);
 
+protected:
+    /**
+     * Unblocks the ADSP if the stream is paused.
+     */
+    void SignalPause();
+
 protected:
     /// Core system
     Core::System& system;