Use EntitySelectionSheet in DiagnosisQuestion and some clean-up (ohcnetwork#12181)

Author: yash-learner

public/locale/en.json

@@ -298,7 +298,6 @@
   "active_prescriptions": "Active Prescriptions",
   "add": "Add",
   "add_another": "Add Another",
-  "add_another_diagnosis": "Add another Diagnosis",
   "add_another_medication": "Add another Medication",
   "add_another_session": "Add another session",
   "add_another_symptom": "Add another Symptom",
@@ -319,6 +318,8 @@
   "add_device": "Add Device",
   "add_device_with_type": "Add {{type}} Device",
   "add_diagnosis": "Add Diagnosis",
+  "add_diagnosis_one": "Add Diagnosis",
+  "add_diagnosis_other": "Add another Diagnosis",
   "add_drawings": "Add Drawings",
   "add_encounter": "Add Encounter",
   "add_exception": "Add Exception",
@@ -338,7 +339,7 @@
   "add_new_patient": "Add New Patient",
   "add_new_user": "Add New User",
   "add_notes": "Add notes",
-  "add_notes_about_diagnosis": "Add notes about the diagnosis...",
+  "add_notes_about_symptom": "Add notes about the symptom...",
   "add_notes_about_the_allergy": "Add notes about the allergy",
   "add_option": "Add Option",
   "add_organization_one": "Add Organization",