fix(ux): misleading label for image fields

[ankush]

BOM doctype has two image fields with the same label "Image". This is confusing in some context.

[codecov]

Codecov Report

Merging #28107 (be45e5b) into develop (9c17052) will increase coverage by 0.04%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop   #28107      +/-   ##
===========================================
+ Coverage    55.19%   55.23%   +0.04%     
===========================================
  Files         1255     1255              
  Lines        67877    67929      +52     
===========================================
+ Hits         37465    37523      +58     
+ Misses       30412    30406       -6     

Impacted Files	Coverage Δ
...ype/pos_invoice_merge_log/pos_invoice_merge_log.py	74.90% <100.00%> (ø)
...ctype/woocommerce_settings/woocommerce_settings.py	80.39% <0.00%> (-3.93%)	⬇️
erpnext/controllers/status_updater.py	85.71% <0.00%> (-1.86%)	⬇️
.../hr/doctype/upload_attendance/upload_attendance.py	45.11% <0.00%> (-1.51%)	⬇️
erpnext/stock/reorder_item.py	76.27% <0.00%> (-0.85%)	⬇️
...ype/account/chart_of_accounts/chart_of_accounts.py	77.55% <0.00%> (-0.69%)	⬇️
...ext/payroll/doctype/payroll_entry/payroll_entry.py	70.86% <0.00%> (-0.24%)	⬇️
...cturing/doctype/production_plan/production_plan.py	69.56% <0.00%> (-0.22%)	⬇️
erpnext/stock/get_item_details.py	79.51% <0.00%> (-0.03%)	⬇️
... and 19 more