MATTER-2796 nxp-media-app: it can't play music successfully after pause action. 100%

Determine in the paly function if the current state is paused.
If it's paused it starts the music by starting the paused function
again; if it's stopped, it runs with the original method.

Change-Id: I2b25a04b16163fec01b311badc454c7e55f9964c
Signed-off-by: nxg07908 <tommy.chen@nxp.com>
Reviewed-on: http://androidsource.nxp.com/project/26388
Reviewed-by: Elven Wang <elven.wang@nxp.com>

Author: nxg07908

examples/nxp-media-app/nxp-media-common/clusters/media-playback/MediaPlaybackManager.cpp

@@ -148,7 +148,11 @@ void MediaPlaybackManager::HandlePlay(CommandResponseHelper<Commands::PlaybackRe
     CHECKRESULT(gMediaIPCHelper->Notify("c 1"));
     mCurrentState = gMediaIPCHelper->GetCurrentStatus();
 
-    CHECKRESULT(gMediaIPCHelper->Notify("p"));
+    if (mCurrentState == chip::app::Clusters::MediaPlayback::PlaybackStateEnum::kPaused) {
+       CHECKRESULT(gMediaIPCHelper->Notify("a"));
+    }else {
+       CHECKRESULT(gMediaIPCHelper->Notify("p"));
+    }
 
     Commands::PlaybackResponse::Type response;
     response.data   = chip::MakeOptional(CharSpan::fromCharString("data response"));