Mark ObjectFactory-injected ResourceTransformers as abstract

[Goooler]

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• CHANGELOG's "Unreleased" section has been updated, if applicable.

[Copilot]

Pull request overview

This PR updates Shadow’s built-in ResourceTransformer implementations that rely on ObjectFactory injection to be abstract, aligning their instantiation model with ObjectFactory.newInstance and reflecting the (potentially breaking) API change in the public surface and changelog.

Changes:

• Mark multiple ObjectFactory-injected built-in ResourceTransformers as abstract (API-affecting change).
• Adjust ResourceTransformer.create(...) to detect ObjectFactory constructors via declaredConstructors.
• Update internal test discovery logic, changelog, and the published API dump to match the new abstract types.

Reviewed changes

Copilot reviewed 16 out of 16 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/test/kotlin/com/github/jengelman/gradle/plugins/shadow/internal/DuplicatesStrategyCheckerTest.kt	Updates transformer class discovery to avoid picking up the abstract base PatternFilterableResourceTransformer while allowing abstract injected transformers.
src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/transformers/XmlAppendingTransformer.kt	Makes the injected transformer type abstract.
src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/transformers/ResourceTransformer.kt	Changes instantiation helper to scan declaredConstructors for ObjectFactory injection support.
src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/transformers/PropertiesFileTransformer.kt	Makes the injected transformer type abstract.
src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/transformers/PreserveFirstFoundResourceTransformer.kt	Makes the injected transformer type abstract.
src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/transformers/MergeLicenseResourceTransformer.kt	Makes the injected transformer type abstract.
src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/transformers/ManifestResourceTransformer.kt	Makes the injected transformer type abstract.
src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/transformers/ManifestAppenderTransformer.kt	Makes the injected transformer type abstract.
src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/transformers/KotlinModuleMetadataTransformer.kt	Makes the injected transformer type abstract.
src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/transformers/IncludeResourceTransformer.kt	Makes the injected transformer type abstract.
src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/transformers/DontIncludeResourceTransformer.kt	Makes the injected transformer type abstract.
src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/transformers/DeduplicatingResourceTransformer.kt	Makes the injected transformer type abstract.
src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/transformers/AppendingTransformer.kt	Makes the injected transformer type abstract.
src/main/kotlin/com/github/jengelman/gradle/plugins/shadow/transformers/ApacheNoticeResourceTransformer.kt	Makes the injected transformer type abstract.
docs/changes/README.md	Documents the potentially breaking change in the unreleased changelog.
api/shadow.api	Updates the public API dump to reflect the new abstract class modifiers.

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[Goooler]

Not for now.