fix(test): replace hardcoded reference to adv with dynamic one

[ruthra-kumar]

Fix failing unit tests: https://github.com/frappe/erpnext/actions/runs/5764235642/job/15627777621

[codecov]

Codecov Report

Merging #36501 (466734f) into develop (10529e1) will increase coverage by 0.06%.
Report is 58 commits behind head on develop.
The diff coverage is 45.63%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #36501      +/-   ##
===========================================
+ Coverage    64.54%   64.61%   +0.06%     
===========================================
  Files          787      788       +1     
  Lines        61176    61428     +252     
===========================================
+ Hits         39486    39689     +203     
- Misses       21690    21739      +49     

Files Changed	Coverage Δ
...counts/report/accounts_payable/accounts_payable.py	100.00% <ø> (ø)
...counts_payable_summary/accounts_payable_summary.py	0.00% <ø> (ø)
..._receivable_summary/accounts_receivable_summary.py	0.00% <0.00%> (ø)
...counts/report/financial_ratios/financial_ratios.py	0.00% <0.00%> (ø)
erpnext/crm/doctype/lead/lead.py	68.03% <ø> (ø)
erpnext/accounts/party.py	77.40% <9.09%> (-0.76%)	⬇️
erpnext/accounts/doctype/account/account.py	73.18% <57.14%> (-0.42%)	⬇️
.../report/accounts_receivable/accounts_receivable.py	71.05% <60.00%> (-1.62%)	⬇️
erpnext/accounts/utils.py	73.85% <87.87%> (+0.41%)	⬆️
...xt/accounts/doctype/journal_entry/journal_entry.py	69.32% <90.90%> (+0.25%)	⬆️
... and 8 more

... and 4 files with indirect coverage changes