fix tooltip displaying date 1 day before of payload

Author: gdfreitas

src/CentileChart/CentileChart.tsx

@@ -709,7 +709,8 @@ function CentileChart({
                     {/* If data points are close together, reduce the size of the point */}
 
                     {childMeasurements.map((childMeasurement: Measurement, index) => {    
-
+                        const [observationYear, observationMonth, observationDay] = childMeasurement.measurement_dates.observation_date.split('-');
+                        const observationDate = `${observationDay}/${observationMonth}/${observationYear}`;
                         const chronData: any = {
                             age_type: 'chronological_age',
                             age_error: childMeasurement.measurement_dates.chronological_decimal_age_error,
@@ -724,7 +725,7 @@ function CentileChart({
                             centile_band: childMeasurement.measurement_calculated_values.chronological_centile_band,
                             clinician_comment: childMeasurement.measurement_dates.comments.clinician_chronological_decimal_age_comment,
                             lay_comment: childMeasurement.measurement_dates.comments.lay_chronological_decimal_age_comment,
-                            observation_date: new Date(childMeasurement.measurement_dates.observation_date).toLocaleDateString('en-UK'),
+                            observation_date: observationDate,
                             observation_value_error: childMeasurement.child_observation_value.observation_value_error,
                             chronological_measurement_error: childMeasurement.measurement_calculated_values.chronological_measurement_error,
                             chronological_decimal_age_error: childMeasurement.measurement_dates.chronological_decimal_age_error,
@@ -747,7 +748,7 @@ function CentileChart({
                             centile_band: childMeasurement.measurement_calculated_values.corrected_centile_band,
                             clinician_comment: childMeasurement.measurement_dates.comments.clinician_corrected_decimal_age_comment,
                             lay_comment: childMeasurement.measurement_dates.comments.lay_corrected_decimal_age_comment,
-                            observation_date: new Date(childMeasurement.measurement_dates.observation_date).toLocaleDateString('en-UK'),
+                            observation_date: observationDate,
                             observation_value_error: childMeasurement.child_observation_value.observation_value_error,
                             corrected_measurement_error: childMeasurement.measurement_calculated_values.corrected_measurement_error,
                             corrected_decimal_age_error: childMeasurement.measurement_dates.corrected_decimal_age_error,