[$25] cannot clear start date in education

[LieutenantRoger]

Steps:

1. Go to settings page
2. Go to education section
3. Add an education with data.
4. Edit education, and try to clear start / end date

Expected Result: It should clear start/end date. Because that field is not required

Actual Result: It cannot clear

Environment: Device: Laptop OS: MacOS Browser: Chrome

https://monosnap.com/file/ZHH0LGvtJjXlSzg0k02DNeOSPBKDCq

[LieutenantRoger]

Challenge https://www.topcoder.com/challenges/ce2ca03e-c748-4af4-9dd8-b4c512530d16 has been created for this ticket.

This is an automated message for lieutenantroger via Topcoder X

[fikzzzy]

@bug-bash-helper assign

[bug-bash-hunt-helper]

@fikzzzy ✅ you are now assigned to this issue and have 12 hours to complete it.

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@bug-bash-helper <link to PR> is ready for review

[bug-bash-helper]

@fikzzzy 🛑 you have some issues assigned which are not completed yet, see #5801.

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