Bugfix: Formik error on select garden in ProduceForm

[clementine-smart]

Currently when you don't select a garden in the ProduceForm the validation shows an error: 'At least one garden should be selected'. It currently shows under every checkbox selection but we want to display it only once - above the first checkbox

• [ ] Research Formik and Yup to understand how the form and validation error is being handled
• [ ] Fix the code so the 'At least one garden should be selected' error only shows once on the screen - above the first checkbox
• [ ] Write tests to make sure it is only displayed once

[saia-maka]

Produce form not currently ready to be worked on