fix(plaid): query to check if bank account exists

[nextchamp-saqib]

Problem:

Plaid Integration auto-creates Bank Accounts. These bank accounts have names based on Account Name & Bank field.

In case the bank field in the Bank Account is changed or renamed, then while refreshing the Plaid Link, the existing/already created Bank Account is not found based on Account Name & Bank filters.

[codecov]

Codecov Report

Merging #27534 (60d4d99) into develop (f07ff92) will increase coverage by 0.13%.
The diff coverage is 50.00%.

@@             Coverage Diff             @@
##           develop   #27534      +/-   ##
===========================================
+ Coverage    54.42%   54.55%   +0.13%     
===========================================
  Files         1333     1333              
  Lines        70723    70725       +2     
===========================================
+ Hits         38491    38586      +95     
+ Misses       32232    32139      -93     

Impacted Files	Coverage Δ
...egrations/doctype/plaid_settings/plaid_settings.py	46.75% <50.00%> (+0.04%)	⬆️
erpnext/education/doctype/student/student.py	74.46% <0.00%> (-3.20%)	⬇️
...ion/doctype/course_enrollment/course_enrollment.py	45.09% <0.00%> (-1.97%)	⬇️
...ctype/accounting_dimension/accounting_dimension.py	64.34% <0.00%> (-1.56%)	⬇️
...e/period_closing_voucher/period_closing_voucher.py	88.23% <0.00%> (-1.48%)	⬇️
erpnext/support/doctype/issue/issue.py	63.59% <0.00%> (-0.98%)	⬇️
...ice_creation_tool/opening_invoice_creation_tool.py	60.41% <0.00%> (-0.70%)	⬇️
...next/accounts/doctype/subscription/subscription.py	81.55% <0.00%> (-0.58%)	⬇️
erpnext/stock/stock_ledger.py	85.76% <0.00%> (-0.55%)	⬇️
erpnext/hr/utils.py	72.80% <0.00%> (-0.44%)	⬇️
... and 21 more