Fix skip params when fused qkv & ffn

[gongel]

Before submitting

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PR types

Bug fixes

PR changes

APIs

Description

• 修复：读取切片参数时，如果开了FusedQKV和FusedFFN，并且需要fused的参数分布在不同的分片上时，会导致参数漏加载。
• 修复办法：

# 添加这一行，下面代码缩进即可
if not cls._get_fuse_or_split_param_mappings(config, is_fuse=True):

[paddle-bot]

Thanks for your contribution!

[codecov-commenter]

Codecov Report

❌ Patch coverage is 89.47368% with 2 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (develop@ae5ed42). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
paddleformers/transformers/model_utils.py	89.47%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             develop    #3054   +/-   ##
==========================================
  Coverage           ?   33.60%           
==========================================
  Files              ?      428           
  Lines              ?    69466           
  Branches           ?        0           
==========================================
  Hits               ?    23341           
  Misses             ?    46125           
  Partials           ?        0           

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