Interrapt G28

Environment:
PC / Windows 11 Education V. 22H2 Google Chrome Version 87.0.4280.88 (Official Build) (64-bit)
Mobile / Samsung Galaxy S8+ 360x740

Precondition:
User must be navigated to: https://qainterrapt.brainster.xyz/login and logged in.

Steps to reproduce:
1. Click on 'Webinars' via navigation menu.
2. Click on the 'CREATE' button on the top right corner.
3. Enter a valid title in the 'Title' field (for example: Webinar for Performance Testing)
4. Enter a valid description in the 'Description' field (for example: Analyse of the main characteristcs of Performance Testing)
5. Click on the 'Start Date' field and select a past date and time from the "date picker" and "time picker" (for example:2023-12-13 12:00 PM)
6. Click on the 'End Date' field and select a past date and time from the "date picker" and "time picker" (for example:2023-12-13 14:00 PM)
7. Enter a valid link in the 'LINK' field (for example:https://us05web.zoom.us/j/845163849)
8. Upload a valid image by clicking on "Choose File"
9. Select a mentor from the drop-down list of the 'Mentor' field (for example: Gurgica Bozinova)
10. Select a valid tag from the drop-down list of the 'Tag' field (for example: QA testing)
11. Click on the 'Create' button.

Expected result:
The user should not be able to create a new webinar by selecting past date and time from the 'Date' and 'Time' picker.

Actual result:
The user is able to create a new webinar by selecting past date and time from the 'Date' and 'Time' picker.