Text fields aren't highlighted when holding the mouse cursor over them

The Bug:

Text fields aren't highlighted when holding the mouse cursor over them.

When the mouse cursor is held over buttons, they receive a white outline. This serves as a visual indication to the player that the said button is ready to be interacted with. This same concept should also be seen with check boxes as per MC-244982, so one would expect the same behavior to occur when holding the mouse cursor over text fields within any menu.

Steps to Reproduce:

1. Navigate to the gamerules menu.

2. Hold your mouse cursor over any button and take now of how a white outline appears around it.

3. Hold your mouse cursor over any text field.

4. Take note as to whether or not text fields are highlighted when holding the mouse cursor over them.

Observed Behavior:

Text fields aren't highlighted.

Expected Behavior:

Text fields would be highlighted.