Fix remaining ResolverFully recursion edge case

[bartolomeooo]

Description

This PR fixes the issue described in #2374.

It addresses a remaining ResolverFully recursion edge case for an OpenAPI 3.1 self-referencing schema combined with allOf when parsing with resolve = true and resolveFully = true.

In this scenario, ResolverFully may re-attach a schema that is still present in schemasInProgress back into a newly aggregated schema, which can create a cyclic Java object graph.

This PR updates the recursive property re-attachment logic to treat in-progress schemas as recursive placeholders in this path, and adds a regression test covering the OAS 3.1 + allOf + self-reference case.

Fixes: #2374

Type of Change

• 🐛 Bug fix
• 🧪 Tests

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

Regression test added for a minimal OpenAPI 3.1 reproducer with:

• a self-referencing schema
• allOf
• resolveFully = true

The new fixture uses this minimal shape:

components:
  schemas:
    Node:
      type: object
      allOf:
        - type: object
          properties:
            value:
              type: number
      properties:
        child:
          $ref: '#/components/schemas/Node'