fix:停止工艺的时候，清除工艺上下文

src/main/java/com/iflytop/gd/app/service/api/CraftsService.java

@@ -215,6 +215,8 @@ public class CraftsService extends ServiceImpl<CraftsMapper, Crafts> {
      * 停止执行工艺，不清除上下文
      */
     public synchronized void stopCrafts(HeatModuleCode heatModuleCode) {
+        TrayState trayState = deviceStateService.getDeviceState().getTrayStateByHeatModuleCode(heatModuleCode);
+        trayState.setCrafts(null);
         CraftsContext ctx = contextMap.get(heatModuleCode);
         Future<?> future = futureMap.remove(heatModuleCode);
         if (ctx == null || future == null) {