Allow creation of duplicate symptoms if cure date is present

[nihal467]

Describe the bug

Currently, the symptoms dropdown shows symptoms that are already added to the list, which can create a duplicate record for the same symptoms

To Reproduce
Steps to reproduce the behavior:

1. Go to create consultation
2. add a symptoms and search for the same in the list
3. See error

Expected behavior

hide already added symptoms from the dropdown

Screenshots

[github-actions]

⚠️ Refrain from assigning this issue to yourself if you have another P1 issue assigned that is not yet closed.

[rithviknishad]

@nihal467 this is expected behaviour if the existing symptom is already cured (has cure date). So that the same symptom can be started with a new onset date.

[nihal467]

• In the frontend, when a symptom is marked as cured, the same symptom can be added again to the list while creating a consultation. This will throw an error: "Create symptoms - duplicate symptoms are not allowed," since the backend only checks if all symptoms are unique or not.

@aparnacoronasafe

1. should we allow user to input date of cure while creating a consultation
2. once a date of cure is added, should we allow user to add a existing symptoms with cure date to the same list during create consultation

[aparnacoronasafe]

1. Yes. While creating consultation say on 1st June, they may want to note that the patient has symptom XYZ from 20-30th May.

2. Yes. In the above eg, the user may want to add symptom xyz from 20-30th May, and then again same symptom from 31st May to 2nd June, Or 31st May - ongoing with no cure date