Fix react rendering issue

[leb2]

• npm run playground to test
• Previously, if you tried to type a value into a controlled datetime input, it would move your cursor to the end of the line. This change makes it so that this doesn't happen anymore
• I also checked that setting the value externally still works.

Description

Motivation and Context

Checklist

[ ] I have not included any built dist files (us maintainers do that prior to a new release)
[ ] I have added tests covering my changes
[ ] All new and existing tests pass
[ ] My changes required the documentation to be updated
  [ ] I have updated the documentation accordingly
  [ ] I have updated the TypeScript 1.8 type definitions accordingly
  [ ] I have updated the TypeScript 2.0+ type definitions accordingly

[yagmin]

Working, no issues.