feat: export CalendarContainerProps interface

[plahteenlahti]

The CalendarContainerProps interface is now exported, allowing other modules to import and use it.

Problem CalendarContainerProps wasn't exported

Changes Export the interface

Contribution checklist

• [x] I have followed the contributing guidelines.
• [ ] I have added sufficient test coverage for my changes.
• [x] I have formatted my code with Prettier and checked for linting issues with ESLint for code readability.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 96.66%. Comparing base (0c27496) to head (f2aa65a).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #4914 +/- ## ======================================= Coverage 96.66% 96.66% ======================================= Files 28 28 Lines 3264 3264 Branches 1359 1355 -4 ======================================= Hits 3155 3155 Misses 105 105 Partials 4 4 ```

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