[typescript-migration] test/year_picker_test.test.js and some tests

[yuki0410-dev]

name: Migrate year_picker_test.test.js and some tests

Description

Linked issue: #4700

Changes year_picker_test.test.js and some tests ware migrated to ts

Contribution checklist

• [x] I have followed the contributing guidelines.
• [x] 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 96.67%. Comparing base (1c8583b) to head (cc867a8).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #4824 +/- ## ======================================= Coverage 96.67% 96.67% ======================================= Files 28 28 Lines 2977 2977 Branches 1288 1285 -3 ======================================= Hits 2878 2878 Misses 99 99 ```

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[martijnrusschen]

Nice work!