fix ernie4.5 modeling bug

[llbdyiu66]

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[paddle-bot]

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 60.00000% with 4 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (develop@7472164). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
paddleformers/transformers/ernie4_5/modeling.py	60.00%	4 Missing ⚠️

❌ Your patch status has failed because the patch coverage (60.00%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             develop    #2884   +/-   ##
==========================================
  Coverage           ?   30.87%           
==========================================
  Files              ?      355           
  Lines              ?    59509           
  Branches           ?        0           
==========================================
  Hits               ?    18376           
  Misses             ?    41133           
  Partials           ?        0           

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