fix(healthcare): patient vitals undefined (#21906) (#21918)

(cherry picked from commit 4dd6b9986fbf5320a80288b871d32ded4c4e39f1)

Co-authored-by: Rucha Mahabal <ruchamahabal2@gmail.com>
diff --git a/erpnext/healthcare/utils.py b/erpnext/healthcare/utils.py
index f092578..9abaa07 100644
--- a/erpnext/healthcare/utils.py
+++ b/erpnext/healthcare/utils.py
@@ -512,10 +512,10 @@
 def get_patient_vitals(patient, from_date=None, to_date=None):
 	if not patient: return
 
-	vitals = frappe.db.get_all('Vital Signs', {
+	vitals = frappe.db.get_all('Vital Signs', filters={
 			'docstatus': 1,
 			'patient': patient
-		}, order_by='signs_date, signs_time')
+		}, order_by='signs_date, signs_time', fields=['*'])
 
 	if len(vitals):
 		return vitals