test(input): fix exist test case
test(input): fix exist test case

clear icon only show up when `value` and `onChange` both exist

ZhonganTechENG/zarm,ZhonganTechENG/zarm,ZhonganTechENG/zarm,ZhonganTechENG/zarm,ZhonganTechENG/zarm,ZhonganTechENG/zarm