Revert "fix: set empty value for tax template in item details"

[deepeshgarg007]

Reverts #37496

[codecov]

Codecov Report

Merging #37987 (70d99ee) into develop (67b36a0) will decrease coverage by 0.01%.
Report is 3 commits behind head on develop.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           develop   #37987      +/-   ##
===========================================
- Coverage    67.41%   67.40%   -0.01%     
===========================================
  Files          757      757              
  Lines        60327    60325       -2     
===========================================
- Hits         40668    40665       -3     
- Misses       19659    19660       +1     

Files	Coverage Δ
erpnext/stock/get_item_details.py	83.03% <ø> (-0.03%)	⬇️
erpnext/utilities/bulk_transaction.py	69.89% <0.00%> (+0.74%)	⬆️

... and 4 files with indirect coverage changes

[deepeshgarg007]

@Mergifyio backport version-15-hotfix

[mergify]

backport version-15-hotfix

✅ Backports have been created

• Backport to branch version-15-hotfix not needed, change already in branch version-15-hotfix