[ISSUE #9966] Propagate policy type for ACL deletion

[skt-shinyruo]

Summary

• add an optional policyType parameter to the ACL delete path in mqadmin, admin, client, and remoting request header
• preserve existing behavior when policyType is not provided, while allowing mqadmin deleteAcl to target PolicyType=Default
• add focused regression coverage in client, broker, and auth tests for deleting ACLs with explicit policy types

Root Cause

DeleteAclRequestHeader supports policyType, but the delete path from mqadmin to broker did not populate it. When the field is absent, broker-side delete handling falls back to PolicyType.CUSTOM, so deleting a DEFAULT policy entry cannot target the intended ACL rule.

Test Plan

• mvn -o -pl tools -am -DskipTests compile
• mvn -o -pl client -am -DfailIfNoTests=false -Dtest=MQClientAPIImplTest#testDeleteAcl+testDeleteAclWithPolicyType test
• mvn -o -pl broker -am -DfailIfNoTests=false -Dtest=AdminBrokerProcessorTest#testDeleteAcl+testDeleteAclWithPolicyType test
• mvn -o -pl auth -am -DfailIfNoTests=false -Dtest=AuthorizationMetadataManagerTest#deleteAcl test

Closes #9966

[codecov-commenter]

Codecov Report

❌ Patch coverage is 11.53846% with 23 lines in your changes missing coverage. Please review.
✅ Project coverage is 47.96%. Comparing base (2a9560c) to head (bf03479).
⚠️ Report is 4 commits behind head on develop.

Files with missing lines	Patch %	Lines
...cketmq/tools/command/auth/DeleteAclSubCommand.java	0.00%	14 Missing ⚠️
...moting/protocol/header/DeleteAclRequestHeader.java	0.00%	4 Missing ⚠️
...he/rocketmq/tools/admin/DefaultMQAdminExtImpl.java	0.00%	3 Missing ⚠️
...apache/rocketmq/tools/admin/DefaultMQAdminExt.java	0.00%	2 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop   #10428      +/-   ##
=============================================
- Coverage      48.05%   47.96%   -0.09%     
+ Complexity     13303    13281      -22     
=============================================
  Files           1377     1377              
  Lines         100611   100634      +23     
  Branches       12991    12994       +3     
=============================================
- Hits           48347    48271      -76     
- Misses         46348    46419      +71     
- Partials        5916     5944      +28     

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