Bug fixes for enums with no type and anyof/oneof schemas

[sserrata]

Description

Addresses issues described in PaloAltoNetworks/pan.dev#891

Motivation and Context

• Proper handling of json-schema style enums
• Address a regression bug introduced in improve handling of discriminators #1009

How Has This Been Tested?

Tested with https://github.com/PaloAltoNetworks/pan.dev/blob/master/openapi-specs/scm/config/ngfw/security/security-services.yaml

Visual inspection of demo tests

Screenshots (if appropriate)

n/a

Types of changes

• Bug fix (non-breaking change which fixes an issue)

[github-actions]

Size Change: -264 B (-0.01%)

Total Size: 2.13 MB

Filename	Size	Change
demo/build/petstore/schemas/cat/index.html	37.4 kB	-44 B (-0.12%)
demo/build/petstore/schemas/dog/index.html	37.8 kB	-44 B (-0.12%)
demo/build/petstore/schemas/honeybee/index.html	37.9 kB	-44 B (-0.12%)
demo/build/petstore/schemas/pet/index.html	37.4 kB	-33 B (-0.09%)
demo/build/petstore/schemas/user/index.html	45.5 kB	-44 B (-0.1%)

ℹ️ View Unchanged

Filename	Size	Change
demo/.docusaurus/codeTranslations.json	2 B	0 B
demo/.docusaurus/docusaurus.config.mjs	14.3 kB	0 B
demo/.docusaurus/globalData.json	54.1 kB	0 B
demo/.docusaurus/i18n.json	267 B	0 B
demo/.docusaurus/registry.js	78.5 kB	0 B
demo/.docusaurus/routes.js	74.2 kB	0 B
demo/.docusaurus/routesChunkNames.json	30.6 kB	0 B
demo/.docusaurus/site-metadata.json	1.35 kB	0 B
demo/build/assets/css/styles.********.css	146 kB	0 B
demo/build/assets/js/main.********.js	706 kB	0 B
demo/build/assets/js/runtime~main.********.js	19.8 kB	0 B
demo/build/index.html	91.1 kB	0 B
demo/build/petstore/add-pet/index.html	28.1 kB	0 B
demo/build/petstore/create-user/index.html	22.2 kB	0 B
demo/build/petstore/create-users-with-array-input/index.html	22.3 kB	0 B
demo/build/petstore/create-users-with-list-input/index.html	22.3 kB	0 B
demo/build/petstore/delete-order/index.html	22.3 kB	0 B
demo/build/petstore/delete-pet/index.html	22.3 kB	0 B
demo/build/petstore/delete-user/index.html	22.6 kB	0 B
demo/build/petstore/find-pets-by-status/index.html	23 kB	0 B
demo/build/petstore/find-pets-by-tags/index.html	23.7 kB	0 B
demo/build/petstore/get-inventory/index.html	21.6 kB	0 B
demo/build/petstore/get-order-by-id/index.html	22.5 kB	0 B
demo/build/petstore/get-pet-by-id/index.html	23.1 kB	0 B
demo/build/petstore/get-user-by-name/index.html	22.6 kB	0 B
demo/build/petstore/login-user/index.html	23.2 kB	0 B
demo/build/petstore/logout-user/index.html	21.9 kB	0 B
demo/build/petstore/new-pet/index.html	22.5 kB	0 B
demo/build/petstore/pet/index.html	20.8 kB	0 B
demo/build/petstore/place-order/index.html	21.8 kB	0 B
demo/build/petstore/schemas/apiresponse/index.html	23.6 kB	-11 B (-0.05%)
demo/build/petstore/schemas/category/index.html	24.6 kB	-22 B (-0.09%)
demo/build/petstore/schemas/id/index.html	21.7 kB	0 B
demo/build/petstore/schemas/order/index.html	25.7 kB	-11 B (-0.04%)
demo/build/petstore/schemas/tag/index.html	23 kB	-11 B (-0.05%)
demo/build/petstore/store/index.html	20 kB	0 B
demo/build/petstore/subscribe-to-the-store-events/index.html	28.6 kB	0 B
demo/build/petstore/swagger-petstore-yaml/index.html	28.7 kB	0 B
demo/build/petstore/update-pet-with-form/index.html	22.5 kB	0 B
demo/build/petstore/update-pet/index.html	22.9 kB	0 B
demo/build/petstore/update-user/index.html	22.5 kB	0 B
demo/build/petstore/upload-file/index.html	22.3 kB	0 B
demo/build/petstore/user/index.html	20.5 kB	0 B

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[github-actions]

Visit the preview URL for this PR (updated for commit d331392):

https://docusaurus-openapi-36b86--pr1136-jao47vad.web.app

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