ci: check for stale doctypes in CI

[ankush]

To avoid errors like: #27313 #27700

[codecov]

Codecov Report

Merging #27703 (5ebed6f) into develop (2bb383b) will increase coverage by 0.16%.
The diff coverage is 16.66%.

❗ Current head 5ebed6f differs from pull request most recent head 049a48a. Consider uploading reports for the commit 049a48a to get more accurate results

@@             Coverage Diff             @@
##           develop   #27703      +/-   ##
===========================================
+ Coverage    54.35%   54.52%   +0.16%     
===========================================
  Files         1255     1333      +78     
  Lines        67809    70748    +2939     
===========================================
+ Hits         36860    38576    +1716     
- Misses       30949    32172    +1223     

Impacted Files	Coverage Δ
erpnext/tests/utils.py	80.00% <16.66%> (-18.12%)	⬇️
erpnext/hr/doctype/skill/skill.py	0.00% <0.00%> (-100.00%)	⬇️
...eport/item_variant_details/item_variant_details.py	32.14% <0.00%> (-55.96%)	⬇️
...wise_balance_history/batch_wise_balance_history.py	69.49% <0.00%> (-23.73%)	⬇️
erpnext/setup/doctype/company/company.py	67.06% <0.00%> (-4.92%)	⬇️
erpnext/regional/united_states/setup.py	95.12% <0.00%> (-4.88%)	⬇️
erpnext/manufacturing/doctype/bom/bom.py	83.93% <0.00%> (-2.95%)	⬇️
erpnext/controllers/queries.py	58.52% <0.00%> (-1.80%)	⬇️
erpnext/accounts/general_ledger.py	94.18% <0.00%> (-1.75%)	⬇️
... and 181 more

[ankush]

this wont catch anything that didn't exist in v10 🤔