Better handling of Inline schema (#15682)

* skip allOf inline subschema created as $ref

* add option for fallback

* add back atleastonemodel

* add log

* update java, kotlin, js samples

* update tests

* fix native client test

* fix java client errors by regenerating test files

* clean up python

* clean up powershell

* clean up php

* clean up ruby

* update erlang, elixir

* update dart samples

* update ts samples

* update r, go samples

* update perl

* update swift

* add back files

* add back files

* remove outdated test files

* fix test

samples/client/petstore/swift5/x-swift-hashable/docs/BigCatAllOf.md

@@ -1,10 +0,0 @@
-# BigCatAllOf
-
-## Properties
-Name | Type | Description | Notes
------------- | ------------- | ------------- | -------------
-**kind** | **String** |  | [optional] 
-
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
-
-

samples/client/petstore/swift5/x-swift-hashable/docs/CatAllOf.md

@@ -1,10 +0,0 @@
-# CatAllOf
-
-## Properties
-Name | Type | Description | Notes
------------- | ------------- | ------------- | -------------
-**declawed** | **Bool** |  | [optional] 
-
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
-
-

samples/client/petstore/swift5/x-swift-hashable/docs/DogAllOf.md

@@ -1,10 +0,0 @@
-# DogAllOf
-
-## Properties
-Name | Type | Description | Notes
------------- | ------------- | ------------- | -------------
-**breed** | **String** |  | [optional] 
-
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
-
-