Completion of possible default configuration file name types

[TomShiDi]

问题说明

假设有一个配置文件名为tomshidi-application-dev，未指定后缀
此时prefix未配置，
spring.application.name=tomshidi-application，
spring.profiles.active=dev，
file-extension=yaml
其他配置项这里不展开说明了
在该段处理逻辑中，会组装dataId查询nacos配置库，组装结果为以下三种:

1. tomshidi-application
2. tomshidi-application.yaml
3. tomshidi-application-dev.yaml
   没有 tomshidi-application-dev 这个dataId，导致无法加载配置项

修复前运行结果

修复前

修复后运行结果

修复后

[CLAassistant]

All committers have signed the CLA.

[zkzlx]

this compatible implementation is not really recommended. the rule for loading configurations is broken.
you ca do this in an extension that lets user choose one . thank you for your help.

[TomShiDi]

got it

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 28.47%. Comparing base (f1ef409) to head (780a41c).
Report is 402 commits behind head on 2.2.x.

Additional details and impacted files

@@            Coverage Diff             @@
##            2.2.x    #2192      +/-   ##
==========================================
+ Coverage   28.44%   28.47%   +0.03%     
==========================================
  Files         245      245              
  Lines        7083     7086       +3     
  Branches      796      797       +1     
==========================================
+ Hits         2015     2018       +3     
  Misses       4902     4902              
  Partials      166      166              

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