Enatega Customer Application: Also remove the heading Default category from restaurant details card

Describe the bug
Remove the heading Default category from restaurant details card showing up on discovery screen. In case If there is no food category selected show blank on the restaurant card.

To Reproduce
Steps to reproduce the behavior:

Go to 'Enatega Customer Application'.
Now see on Discovery page , the restaurant cards right below the restaurant name there is the heading Default Food Category when no food category is selected by the user.
Expected behavior
If a food category is selected for a restaurant, it should display the selected category on the restaurant card.
If no food category is selected, the category heading should be blank or not shown at all (depending on design guidelines).

Screenshots

Screen_Recording_20250127_155156.mp4
Smartphone (please complete the following information):

Device: [e.g. Infinix Hot 50]
OS: [e.g.Android]
Browser [e.g. Application]
Version [e.g. Latest]

Start in the Enatega Customer Application by searching for the “Default Food Category” text and tracing the restaurant card used on the Discovery page. Check the card with and without a selected food category, then verify that selected categories still appear and that no heading or placeholder appears when the category is absent.

Written by the indexing model from the issue text.