optimize: spring boot compatible with file.conf and registry.conf (#6811)

[lyl2008dsg]

• I have registered the PR changes.

Ⅰ. Describe what this PR did

This PR implements a new class SeataFileConfigurationProvider in the seata-spring-autoconfigure-core module. This change ensures that both seata-spring-boot-starter and seata-spring-autoconfigure-server can read legacy configuration files (file.conf and registry.conf), addressing an issue where users upgrading from Spring to Spring Boot would only have their configuration loaded, causing confusion.

Ⅱ. Does this pull request fix one issue?

fixed #6811

This PR addresses the issue where seata-spring-boot-starter fails to load file.conf and registry.conf when users upgrade from Spring to Spring Boot.

Ⅲ. Why don't you add test cases (unit test/integration test)?

org.apache.seata.spring.boot.autoconfigure.SeataCoreAutoConfigurationTest

Ⅳ. Describe how to verify it

1. Use the seata-spring-boot-starter in a Spring Boot application.
2. Ensure that configurations from file.conf and registry.conf are correctly loaded alongside configurations.
3. Verify the behavior in both seata-spring-boot-starter and seata-spring-autoconfigure-server environments.

Ⅴ. Special notes for reviews

• This change is backward-compatible and allows users upgrading from Spring to Spring Boot to continue using their legacy configuration files without disruption.
• It would be helpful to review the relocation of SeataPropertiesLoader to the seata-spring-autoconfigure-core module, ensuring that legacy configuration files (file.conf and registry.conf) are still properly loaded in both seata-spring-boot-starter and seata-spring-autoconfigure-server environments. Additionally, please verify that this change maintains backward compatibility and ensures a smooth transition for users moving from Spring to Spring Boot.

[codecov]

Codecov Report

Attention: Patch coverage is 16.41791% with 56 lines in your changes missing coverage. Please review.

Project coverage is 51.75%. Comparing base (66bd3a4) to head (cda9a19).

Files with missing lines	Patch %	Lines
...n/java/org/apache/seata/common/store/LockMode.java	0.00%	16 Missing ⚠️
...ava/org/apache/seata/common/store/SessionMode.java	0.00%	16 Missing ⚠️
...ot/autoconfigure/loader/SeataPropertiesLoader.java	20.00%	12 Missing ⚠️
...org/apache/seata/server/session/SessionHolder.java	44.44%	4 Missing and 1 partial ⚠️
...he/seata/server/cluster/raft/RaftStateMachine.java	33.33%	2 Missing ⚠️
...e/seata/server/coordinator/DefaultCoordinator.java	33.33%	0 Missing and 2 partials ⚠️
...gure/provider/SpringBootConfigurationProvider.java	50.00%	0 Missing and 1 partial ⚠️
...ache/seata/server/coordinator/RaftCoordinator.java	0.00%	1 Missing ⚠️
...apache/seata/server/lock/LockerManagerFactory.java	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x    #6828      +/-   ##
============================================
- Coverage     52.52%   51.75%   -0.78%     
+ Complexity     6542     6475      -67     
============================================
  Files          1122     1124       +2     
  Lines         39857    39865       +8     
  Branches       4668     4668              
============================================
- Hits          20936    20632     -304     
- Misses        16925    17270     +345     
+ Partials       1996     1963      -33     

Files with missing lines	Coverage Δ
...e/seata/server/cluster/raft/RaftServerManager.java	86.13% <100.00%> (ø)
...org/apache/seata/server/session/SessionHelper.java	49.37% <ø> (ø)
...ava/org/apache/seata/server/store/StoreConfig.java	65.78% <ø> (-9.54%)	⬇️
...gure/provider/SpringBootConfigurationProvider.java	11.36% <50.00%> (+11.36%)	⬆️
...ache/seata/server/coordinator/RaftCoordinator.java	0.00% <0.00%> (ø)
...apache/seata/server/lock/LockerManagerFactory.java	84.21% <0.00%> (ø)
...he/seata/server/cluster/raft/RaftStateMachine.java	14.28% <33.33%> (-18.75%)	⬇️
...e/seata/server/coordinator/DefaultCoordinator.java	43.21% <33.33%> (-2.53%)	⬇️
...org/apache/seata/server/session/SessionHolder.java	52.63% <44.44%> (-1.32%)	⬇️
...ot/autoconfigure/loader/SeataPropertiesLoader.java	62.85% <20.00%> (ø)
... and 2 more

... and 34 files with indirect coverage changes