[BUG] [TypeScript-Axios] invalid code generation of anyOf

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?

Description

With the latest master branch, the following spec does generate the wrong code.

upgradeTo:
                                    anyOf: [{properties: {purchasedPackageId: {$ref: '#/components/schemas/APITypeObjectId_APIObjectType.PurchasedPackage_'}, mode: {type: string, enum: [purchasedPackage], nullable: false}}, required: [purchasedPackageId, mode], type: object}, {properties: {packageId: {$ref: '#/components/schemas/APITypeObjectId_APIObjectType.BuyablePackage_'}, mode: {type: string, enum: [package], nullable: false}}, required: [packageId, mode], type: object}]
                                

What it should be (this is the original defiinitoin on our side)

But what it does:

so it's not purchasedPackageId OR packageId.. it is an AND.

It's the same if we use it without the "mode" paramter, then it's just merged into one (so also purchasedPackageId and packageId is required, instead of an OR).

openapi-generator version

6.0.0 - latest master snapshot
did work with 5.x

OpenAPI declaration file content or url

Start by reproducing the issue with the inline OpenAPI anyOf spec and the provided typescript-axios generation command. Compare the generated model with the expected image; done means the alternatives remain distinct, with purchasedPackageId and packageId treated as an OR rather than both being required.