Rename SupportsNullableProperty to DoesNotSupportNullValue

[Youssef1313]

Following a discussion with @mikekistler, the method name is wrong. It's used actually in a code path that removes "null" flag.

[Copilot]

Pull request overview

This PR corrects the naming of a local helper in JsonNodeSchemaExtensions.ApplyParameterInfo, aligning it with the actual behavior: removing null from the generated OpenAPI schema types for binding sources where model binding doesn’t support nullable values.

Changes:

• Renames SupportsNullableProperty to DoesNotSupportNullValue to reflect that the code path removes null from the schema.
• Updates the call site to use the renamed helper.

Comments suppressed due to low confidence (1)

src/OpenApi/src/Extensions/JsonNodeSchemaExtensions.cs:420

• The binding source list in DoesNotSupportNullValue duplicates IsNonBodyBindingSource directly below. Keeping two independent copies makes it easy for the lists to drift and produce inconsistent behavior if new binding sources are added/removed later.

        static bool DoesNotSupportNullValue(BindingSource bindingSource) => bindingSource == BindingSource.Header
            || bindingSource == BindingSource.Query
            || bindingSource == BindingSource.Path
            || bindingSource == BindingSource.Form
            || bindingSource == BindingSource.FormFile;

[mikekistler]

Looks good! 👍