🐞 fix #9521 isValidating property stuck to true

[bluebill1049]

ref https://codesandbox.io/s/react-hook-form-isvalidating-stuck-forked-jhuij0?file=/src/index.tsx

[codesandbox]

  Open in CodeSandbox Web Editor | VS Code | VS Code Insiders

[github-actions]

Size Change: -8 B (0%)

Total Size: 18.7 kB

Filename	Size	Change
dist/index.cjs.js	9.29 kB	-4 B (0%)
dist/index.umd.js	9.38 kB	-4 B (0%)

_{compressed-size-action}