fix(minor): add a filter to avoid send work anniversary reminders for zero year (backport #28092)

[mergify]

This is an automatic backport of pull request #28092 done by Mergify.

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[codecov]

Codecov Report

Merging #28096 (5d52899) into develop (6ec047c) will increase coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop   #28096      +/-   ##
===========================================
+ Coverage    55.17%   55.19%   +0.02%     
===========================================
  Files         1255     1255              
  Lines        67895    67895              
===========================================
+ Hits         37459    37477      +18     
+ Misses       30436    30418      -18     

Impacted Files	Coverage Δ
erpnext/hr/doctype/employee/employee_reminders.py	76.47% <ø> (ø)
...payroll/doctype/income_tax_slab/income_tax_slab.py	85.71% <0.00%> (-14.29%)	⬇️
...eorder_level/itemwise_recommended_reorder_level.py	90.56% <0.00%> (-3.78%)	⬇️
...e/asset_value_adjustment/asset_value_adjustment.py	87.80% <0.00%> (-3.66%)	⬇️
erpnext/stock/report/stock_ledger/stock_ledger.py	75.00% <0.00%> (-3.23%)	⬇️
...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/stock/report/stock_ageing/stock_ageing.py	89.20% <0.00%> (-1.44%)	⬇️
erpnext/accounts/deferred_revenue.py	75.22% <0.00%> (-0.89%)	⬇️
...ice_creation_tool/opening_invoice_creation_tool.py	60.41% <0.00%> (-0.70%)	⬇️
... and 15 more