continue Mission js mock

Signed-off-by: wangyang2022 <wangyang412@huawei.com>
Change-Id: I9dc648939cd8ee64a0b5e45336bbaed9a70ea711

runtime/main/extend/systemplugin/napi/ohos_distributedMissionManager.js

@@ -64,6 +64,18 @@ export function mockDistributedMissionManager() {
           resolve();
         });
       }
+    },
+    continueMission: function (...args) {
+      console.warn('distributedMissionManager.continueMission interface mocked in the Previewer. How this interface works on the' +
+        ' Previewer may be different from that on a real device.');
+      const len = args.length;
+      if (typeof args[len - 1] === 'function') {
+        args[len - 1].call(this, paramMock.businessErrorMock);
+      } else {
+        return new Promise((resolve, reject) => {
+          resolve();
+        });
+      }
     }
   }
   return distributedMissionManager