Change add-value validation to require 10 characters instead of 5

[Copilot]

Updated the validation logic for the "add-value" field in the PopUp component to require exactly 10 characters instead of 5 characters for location numbers.

Changes

• Modified the handleChange method in src/PopUp.js to update the validation rules for the add-value case
• Changed the minimum length requirement from 5 to 10 characters
• Changed the maximum length requirement from 5 to 10 characters
• Updated error messages to reflect the new 10-character requirement

Details

The validation now enforces:

• If the input length is less than 10 characters: displays "Location number must be 10 characters long!"
• If the input length is greater than 10 characters: displays "Location number can not be more than 10 characters long!"
• If the input is exactly 10 characters: no error is displayed

Note: The edit-value validation remains unchanged and still requires 5 characters as it was not part of the requested change.

Original prompt

Create a PR to change the add-value change to require at least 10 characters instead of 5

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