[type:fix]Fix: After shenyu is upgraded to v2.6.0, the "addPrefixed" feature of the contextpath plugin is lost, and the version after 2.6.0 returns to all the features of the previous version.

[lianjunwei]

detail,see: #5055 Make sure that:

• [x] You have read the contribution guidelines.
• [x] You submit test cases (unit or integration tests) that back your changes.
• [ ] Your local test passed ./mvnw clean install -Dmaven.javadoc.skip=true.

[codecov-commenter]

Codecov Report

Merging #5056 (00b2142) into master (6c9358b) will decrease coverage by 0.02%. The diff coverage is 90.00%.

@@             Coverage Diff              @@
##             master    #5056      +/-   ##
============================================
- Coverage     62.92%   62.91%   -0.02%     
+ Complexity     8498     8495       -3     
============================================
  Files          1224     1224              
  Lines         36375    36379       +4     
  Branches       3389     3389              
============================================
- Hits          22890    22888       -2     
- Misses        11543    11548       +5     
- Partials       1942     1943       +1     

Files Changed	Coverage Δ
.../shenyu/plugin/context/path/ContextPathPlugin.java	88.00% <90.00%> (+2.28%)	:arrow_up:

... and 3 files with indirect coverage changes

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