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Describe the bug

To validate the changes made in #63052 I put the OpenAPI schema into editor.swagger.io to see if the schema for JSON Patch had any validation errors (it does not).

However, amongst a few schema errors that are found in the document that aren't just artifacts of testing, I found two that appear to be actual issues:

1. Semantic error at components.schemas.Category.properties.tags.$ref - $refs must reference a valid location in the document from

   aspnetcore/src/OpenApi/test/Microsoft.AspNetCore.OpenApi.Tests/Integration/snapshots/OpenApiDocumentLocalizationTests.VerifyOpenApiDocumentIsInvariant.verified.txt

   Line 1362 in f91de94

   "$ref": "#/components/schemas/Category/properties/parent/properties/tags"

2. Semantic error at components.schemas.Item.properties.name.$ref - $refs must reference a valid location in the document from

   aspnetcore/src/OpenApi/test/Microsoft.AspNetCore.OpenApi.Tests/Integration/snapshots/OpenApiDocumentLocalizationTests.VerifyOpenApiDocumentIsInvariant.verified.txt

   Line 1427 in f91de94

   "$ref": "#/components/schemas/Root/properties/item1/properties/name"

These correlate to these parts of the code:

1. aspnetcore/src/OpenApi/sample/Endpoints/MapSchemasEndpoints.cs

   Line 51 in c103a03

   public IEnumerable<Tag> Tags { get; set; } = [];

2. aspnetcore/src/OpenApi/sample/Endpoints/MapSchemasEndpoints.cs

   Line 73 in c103a03

   public string[] Name { get; set; } = null!;

Both of these properties are arrays and appear to generate a circular reference to themselves via another object.

1. Points to the tags property of the parent property of itself, but that's also a Category, so it's just a circular reference to itself.
2. Points to the name property of the item1 property of Root, but that's also an Item, so again creates a circular reference to itself.

In both cases it looks like the schema properties should be an array of items which reference Tag or Item respectively.

Expected Behavior

The schemas do not generate validation errors.

Steps To Reproduce

Enter the contents of OpenApiDocumentLocalizationTests.VerifyOpenApiDocumentIsInvariant.verified.txt into editor.swagger.io.

Exceptions (if any)

No response

.NET Version

10.0.100-preview.7.25322.101

Anything else?

No response