wlserver: Only send Gamescope screenshot feedback if it was initiated…

… from wl

src/steamcompmgr.cpp

@@ -3006,7 +3006,7 @@ paint_all(bool async)
 					XDeleteProperty( root_ctx->dpy, root_ctx->root, root_ctx->atoms.gamescopeDebugScreenShotAtom );
 				}
 
-				if ( bScreenshotSuccess )
+				if ( bScreenshotSuccess && oScreenshotInfo->bWaylandRequested )
 				{
 						wlserver_lock();
 						for ( const auto &control : wlserver.gamescope_controls )

src/steamcompmgr_shared.hpp

@@ -192,6 +192,7 @@ namespace gamescope
 		gamescope_control_screenshot_type eScreenshotType = GAMESCOPE_CONTROL_SCREENSHOT_TYPE_BASE_PLANE_ONLY;
 		uint32_t uScreenshotFlags = 0;
 		bool bX11PropertyRequested = false;
+		bool bWaylandRequested = false;
 	};
 
 	class CScreenshotManager

src/wlserver.cpp

@@ -993,6 +993,7 @@ static void gamescope_control_take_screenshot( struct wl_client *client, struct
 		.szScreenshotPath = path,
 		.eScreenshotType  = (gamescope_control_screenshot_type)type,
 		.uScreenshotFlags = flags,
+		.bWaylandRequested = true,
 	} );
 }