[Enhancement] remove legacy config package

[nagisa-kunhah]

…GetProviderService()、config.GetShutDown()

Description

Fixes #3329

Checklist

• I confirm the target branch is develop
• Code has passed local testing
• I have added tests that prove my fix is effective or that my feature works

[sonarqubecloud]

Quality Gate passed

Issues
6 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
28.9% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov-commenter]

Codecov Report

❌ Patch coverage is 68.27957% with 59 lines in your changes missing coverage. Please review.
✅ Project coverage is 52.69%. Comparing base (e6e14fd) to head (9d42c1b).
⚠️ Report is 7 commits behind head on develop.

Files with missing lines	Patch %	Lines
registry/protocol/protocol.go	69.36%	22 Missing and 12 partials ⚠️
registry/directory/directory.go	66.66%	21 Missing and 4 partials ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3372      +/-   ##
===========================================
+ Coverage    52.40%   52.69%   +0.28%     
===========================================
  Files          492      492              
  Lines        37785    37955     +170     
===========================================
+ Hits         19800    19999     +199     
+ Misses       16380    16346      -34     
- Partials      1605     1610       +5     

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[Copilot]

Pull request overview

This PR continues the staged removal of the legacy dubbo.apache.org/dubbo-go/v3/config package by eliminating runtime reads from it in the registry layer, switching registry/protocol and registry/directory to resolve configuration exclusively via URL attributes (with sensible defaults).

Changes:

• Remove legacy config package usage from registry/protocol export/reExport/destroy paths by resolving shutdown/application/provider config via URL attributes.
• Remove legacy config package usage from registry/directory initialization by resolving application/registries via URL attributes (with defaults).
• Add/adjust tests to validate attribute propagation, listener key resolution, service map re-registration, and destroy shutdown wait behavior.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
registry/protocol/protocol.go	Drops legacy config reads; resolves shutdown/application/provider config from URL attributes and uses resolved shutdown config for destroy wait.
registry/protocol/protocol_test.go	Updates provider config attribute key usage and adds tests covering attribute copying, reExport service map registration, destroy wait timing, and application name resolution.
registry/directory/directory.go	Drops legacy config reads; resolves application and registries configuration from URL attributes (or defaults) during directory creation and listener initialization.
registry/directory/directory_test.go	Adds tests for application/registries attribute resolution and consumer listener key selection via the resolved application name.

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