修复单图上传组件，已上传图片也会返回图片路径

long

2021-10-28 7ec86fa74e94095c855f91448d01b033875cbc9c

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.DS_Store
node_modules/
dist/
npm-debug.log*
yarn-debug.log*
yarn-error.log*
package-lock.json
tests/**/coverage/
 
# Editor directories and files
.idea
.vscode
*.suo
*.ntvs*
*.njsproj
*.sln