Conversion issue in BMI calculation

[aswathikrishnan24]

Describe the bug
Incorrect calculation due to conversion issue in WeightAssessmentandCounselingforNutritionandPhysicalActivityforChildrenandAdolescentsFHIR

Observations are picked incorrectly.
It considers all the measurements in measurement period and does not exclude the unexpected observations. For example, BMI percentile/ratio does not fall in measurement period, but it takes height and weight in the calculations which fall in the measurement period which are then included in BMI ratio calculations. The same happens for height and weight.

We believe the issue comes into play in line 282, where the Observations are filtered for BMI observations.

This line refers to the isObservationBMI check, which does not seem to filter correctly:

To Reproduce
Steps to reproduce the behavior:

1. Go to WeightAssessmentandCounselingforNutritionandPhysicalActivityforChildrenandAdolescentsFHIR
2. Click on 055edb62-3f1f-4b4e-8671-9ab319df0e94
3. Run the test
4. Numerator in first group is calculated as 1 when it is expected to be 0

Version used:
Version: develop-2.0
46d3248