fix: statistical component showing up in salary slip

[ruchamahabal]

Front port of: frappe/erpnext#31746

[codecov-commenter]

Codecov Report

Merging #30 (94c79fe) into develop (9e6280e) will decrease coverage by 0.05%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop      #30      +/-   ##
===========================================
- Coverage    71.87%   71.81%   -0.06%     
===========================================
  Files          174      174              
  Lines         8651     8651              
===========================================
- Hits          6218     6213       -5     
- Misses        2433     2438       +5     

Impacted Files	Coverage Δ
hrms/payroll/doctype/salary_slip/salary_slip.py	87.01% <ø> (-0.37%)	⬇️
hrms/hr/utils.py	74.48% <100.00%> (-0.69%)	⬇️
...rms/payroll/doctype/payroll_entry/payroll_entry.py	77.66% <0.00%> (-0.41%)	⬇️
hrms/hr/doctype/shift_type/shift_type.py	88.88% <0.00%> (+2.46%)	⬆️