[Backport] Fixed #21425 Date design change show not correctly value in backend

[mage2pratik]

Original Pull Request

#21443

Fixed #21425 Date design change show not correctly value in backend

Preconditions (*)

1. Magento 2.3.0
2. PHP 7.1.17

Steps to reproduce (*)

1. Go to Admin
2. Content > Design > Schedule
3. Add new design change
4. Fill form with date pick to year 21xx
5. Go back to edit one more, click on date icon to see issue

Expected result (*)

1. Show correctly date Ex: 02/04/2100

Actual result (*)

1. Currently date show 2/4/00
   This happen in interface US locale
   Reproduced on 2.2.8-dev too

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[magento-engcom-team]

Hi @mage2pratik. Thank you for your contribution
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[magento-engcom-team]

Hi @rogyar, thank you for the review.
ENGCOM-4435 has been created to process this Pull Request

[soleksii]

✔️ QA Passed

[ghost]

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