Improve AddressMatch CIDR naming compatibility

[yin-bo-Final]

What changed

This PR improves the CIDR naming in AddressMatch while keeping backward compatibility.

• Added cidr field and getCidr / setCidr accessors.
• Kept the existing cird field and getCird / setCird accessors as deprecated for compatibility.
• Updated internal matching logic to use getCidr().
• Added tests to cover both cidr and deprecated cird field mapping through PojoUtils.
• Fixed the remaining cird typo in NetUtils Javadoc.

Motivation

cird appears to be a typo of cidr, where CIDR stands for Classless Inter-Domain Routing. Since the old name may already be used by configuration binding or external code, this PR keeps backward compatibility while introducing the correct naming.

Closes #16314

Tests

./mvnw -pl dubbo-cluster -Dtest=AddressMatchTest test

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 60.80%. Comparing base (d535eac) to head (14a3236).

Additional details and impacted files

@@             Coverage Diff              @@
##                3.3   #16315      +/-   ##
============================================
+ Coverage     58.80%   60.80%   +2.00%     
- Complexity       15    11769   +11754     
============================================
  Files          1953     1953              
  Lines         89208    89213       +5     
  Branches      13458    13458              
============================================
+ Hits          52458    54246    +1788     
+ Misses        31073    29396    -1677     
+ Partials       5677     5571     -106     

Flag	Coverage Δ
integration-tests-java21	32.11% <0.00%> (?)
integration-tests-java8	32.31% <0.00%> (?)
samples-tests-java21	32.17% <0.00%> (?)
samples-tests-java8	29.74% <0.00%> (?)
unit-tests-java11	59.06% <100.00%> (+0.01%)	⬆️
unit-tests-java17	58.52% <100.00%> (+<0.01%)	⬆️
unit-tests-java21	58.52% <100.00%> (+<0.01%)	⬆️
unit-tests-java25	58.48% <100.00%> (+0.05%)	⬆️
unit-tests-java8	59.07% <100.00%> (+0.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[zrlw]

LGTM