!5987 Solve XTS ActsOnAndOffScreenTest fail problem

Merge pull request !5987 from zhoujun62/my_xts_acts

ability/ability_runtime/actssupportfunction/actsonandoffscreentest/entry/src/main/ets/test/OnAndOffScreenTest.test.ets

@@ -55,6 +55,7 @@ export default function OnAndOffScreenTest() {
     })
 
     async function slideScreen(TAG) {
+      await sleep(1500)
       console.log(TAG + "slideScreen start");
       let cmd = 'uinput -T -d 300 600 -m 300 600 300 100 -u 300 100';
       await executeShellCommand(cmd, TAG);
@@ -634,4 +635,4 @@ export default function OnAndOffScreenTest() {
       })
     })
   })
-}
+}
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