fix: Allow deep merging objects in allOf operations

[cweckesser]

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Description

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motivation and context. List any dependencies that are required for this change.

Fixes #5641

Type of change

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

Screenshots/Sandbox (if appropriate/relevant):

Code Sandbox

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can
reproduce. Please also list any relevant details for your test configuration

• A unit test was added that verifies that when processing a model containing two object-type sub-properties with overriding attributes, the resulting model properly merges the sets of properties from the two objects

Test Environment:

• OS: macOS
• "@omnigraph/openapi": "^0.94.6",
• NodeJS: 16

Checklist:

• I have followed the
  CONTRIBUTING doc and the
  style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests and linter rules pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

Further comments

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[changeset-bot]

🦋 Changeset detected

Latest commit: edc5a63

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 30 packages

Name	Type
@omnigraph/json-schema	Patch
@omnigraph/openapi	Patch
@graphql-mesh/json-schema	Patch
@omnigraph/raml	Patch
@graphql-mesh/openapi	Patch
auth0-example	Patch
cloudflare-workers	Patch
example-gcp	Patch
hasura-openbrewery-geodb	Patch
hello-world-esm	Patch
json-schema-hello-world	Patch
covid-mesh	Patch
json-schema-example	Patch
json-schema-fhir	Patch
json-schema-file-upload	Patch
json-schema-subscriptions	Patch
reddit-example	Patch
@graphql-mesh/raml	Patch
nextjs-apollo-example	Patch
nextjs-sdk-example	Patch
javascript-wiki	Patch
typescript-location-weather-example	Patch
openapi-meilisearch	Patch
openapi-orbit	Patch
openapi-stackexchange	Patch
openapi-stripe	Patch
openapi-subscriptions	Patch
openapi-youtrack	Patch
programmatic-batching-example	Patch
gateway-example	Patch

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[ardatan]

Thank you @cweckesser ! This is an amazing work!