fix: resolve @Hidden through the class hierarchy in Reader

[shamsManna]

Description

Reader reads @Hidden with the raw cls.getAnnotation(Hidden.class) and method.getAnnotation(Hidden.class), while every other annotation at those same two sites goes through ReflectionUtils.getAnnotation, which also walks superclasses, implemented interfaces and meta-annotations. So with the usual JAX-RS layout of an annotated API interface plus an implementation class, a resource or operation marked @Hidden on the interface still ends up in the generated document that OpenApiResource/OpenApiServlet serve, exposing the path, its parameters and its request/response schemas. @Operation(hidden = true) on that same interface method is honoured, and @Hidden lists ANNOTATION_TYPE among its targets but is never resolved as a meta-annotation either, so both reads now go through ReflectionUtils.getAnnotation like their neighbours.

Fixes:

Type of Change

• 🐛 Bug fix
• ✨ New feature
• ♻️ Refactor (non-breaking change)
• 🧪 Tests
• 📝 Documentation
• 🧹 Chore (build or tooling)

Checklist

• I have added/updated tests as needed
• I have added/updated documentation where applicable
• The PR title is descriptive
• The code builds and passes tests locally
• I have linked related issues (if any)

Screenshots / Additional Context

HiddenInheritedUserResource covers the three cases: @Hidden on an interface method, on an interface type, and through a meta-annotation. On master all three resources are emitted (/user/internal, /admin, /metrics); with this change only /user/public remains. Full ./mvnw install is green, including the swagger-jaxrs2 suite.