Add copy constructor for JacksonAnnotationIntrospector

[cowtowncoder]

Adds protected JacksonAnnotationIntrospector(JacksonAnnotationIntrospector src) copy constructor (since 3.3), which copies all configuration settings of src (currently _cfgConstructorPropertiesImpliesCreator), but not cached state (_annotationsInside).

Why

Sub-classes that need to create re-configured copies — instead of modifying an introspector in place, which also affects every mapper already using it (including ones created via rebuild()) — currently have to copy JacksonAnnotationIntrospector settings by hand, and would silently miss any setting added later.

The motivating case is FasterXML/jackson-dataformat-xml#913, where XmlMapper.Builder.defaultUseWrapper() modified a JacksonXmlAnnotationIntrospector shared with the original mapper; its new copy constructor can delegate to this one once available.

Tests

JacksonAnnotationIntrospectorTest.testCopyConstructor: setting is copied (both values), copy has its own cache, and is independent of source.

🤖 Generated with Claude Code

[gitar-bot]

Code Review ✅ Approved

🟡 Medium risk · Adds subclass copy construction that propagates introspector configuration but excludes caches.

Adds a protected copy constructor for JacksonAnnotationIntrospector that copies configuration settings while maintaining independent cached state, enabling subclasses to create reconfigured copies without affecting shared instances. Test coverage confirms settings are properly copied and caches remain independent. No issues found.

Review coverage

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[github-actions]

🧪 Code Coverage Report

Metric	Coverage	Change
Instructions	82.36%	📈 +0.010%
Branches	75.94%	📉 -0.010%

Coverage data generated from JaCoCo test results

[github-actions]

🧪 Code Coverage Report

Metric	Coverage	Change
Instructions	82.36%	📈 +0.010%
Branches	75.96%	📈 +0.010%

Coverage data generated from JaCoCo test results