Feature request: Make it easier to save Favorite Food from Carb Entry screen

[marionbarker]

Is your feature request related to a problem? Please describe.

Many people get frustrated when creating Favorite Foods.

• If they happen to start from the Settings, Favorite Food screen, it is really straightforward
• If they try to create one from the Add Carb Entry screen, they are not sure how to get the "Save as favorite food" button to be active
  • In order to make it active, they must tap on the plate and then select at least one emoji

Describe the solution you'd like The selection of a food emoji should not be required on the Carb Menu to activate that button.

I made a code change and this changed the behavior.

See PR #2136