fix(types): replace deprecated React.SFC type

Description

Replaces deprecated React.SFC type with React.FunctionComponent.

It's required to passing @types/react 18 linter check:

node_modules/react-day-picker/types/Props.d.ts:47:13 - error TS2694: Namespace 'React' has no exported member 'SFC'.

47     | React.SFC<CaptionElementProps>;

Type of Change

[x] Bug fix (non-breaking change which fixes an issue)
[ ] New feature (non-breaking change which adds functionality)
[ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
[ ] Documentation update

Checklist

Before submitting your pull request, please make sure the following is done:

[x] I have read the CONTRIBUTING doc
[ ] I have added tests that prove my fix is effective or that my feature works
[ ] I have added necessary documentation (if appropriate)
[ ] I have followed the coding guidelines in this project
[ ] I have tested my changes on different browsers and screen sizes

Linked Issues

If this PR addresses any existing issues, please link them here. Example: Fixes #123

Test Plan

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration.

Screenshots (if appropriate)

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Further Comments

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gpbl / react-day-picker