Update “Clear” button in Cron expression field

[paodb]

Feature proposal

The field shows a “Clear” text button to reset its value (see attached screenshot).

Describe solution expectations

• Replace the text “Clear” with the standard X icon used in Vaadin's TextField.
• The button should only be visible when the field has a value (the same as in Vaadin's TextField).

Additional information

This would improve consistency with Vaadin components and make the UI more familiar and cleaner for users.

[paodb]

I see in the code that is using a suffix in order to be able to apply internationalization to the clear button text.

Was this part of the scope? Should we make default value "X"?

[mlopezFC]

We should use the most standard way of clearing the value. That was not part of the scope.