feat: add support for 'x-query' operation in PathItem type

[n0rahh]

What/Why/How?

What: Add support for parsing x-query as an Operation on OAS3 PathItem

Why: Refs nested under x-query were not being resolved/bundled the same way as refs under standard HTTP operations (e.g. get).

How: Extend the OAS3 type tree to treat x-query as an Operation.

Reference

Issue: https://github.com/Redocly/redocly/issues/12876
PR: https://github.com/Redocly/redocly/pull/20434

Testing

Screenshots (optional)

Check yourself

• Code changed? - Tested with Redoc/Realm/Reunite (internal)
• All new/updated code is covered by tests
• New package installed? - Tested in different environments (browser/node)
• Documentation update considered

Security

• The security impact of the change has been considered
• Code follows company security practices and guidelines

[changeset-bot]

🦋 Changeset detected

Latest commit: 32a0ce6

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

This PR includes changesets to release 3 packages

Name	Type
@redocly/openapi-core	Patch
@redocly/cli	Patch
@redocly/respect-core	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

📦 A new experimental 🧪 version v0.0.0-snapshot.1768999175 of Redocly CLI has been published for testing.

Install with NPM:

npm install @redocly/cli@0.0.0-snapshot.1768999175
# or
npm install @redocly/openapi-core@0.0.0-snapshot.1768999175
# or
npm install @redocly/respect-core@0.0.0-snapshot.1768999175

⚠️ Note: This is a development build and may contain unstable features.

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	78.67% (🎯 78%)	6209 / 7892
🔵	Statements	78.09% (🎯 78%)	6413 / 8212
🔵	Functions	81.99% (🎯 81%)	1266 / 1544
🔵	Branches	70.45% (🎯 70%)	4258 / 6044

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
packages/core/src/types/oas3.ts	75.36%	31.81%	66.66%	75.36%	344, 351, 460-463, 494-518

Generated in workflow #8392 for commit 32a0ce6 by the Vitest Coverage Report Action

[github-actions]

CLI Version	Mean Time ± Std Dev (s)	Relative Performance (Lower is Faster)
cli-latest	3.495s ± 0.045s	▓ 1.00x
cli-next	3.494s ± 0.028s	▓ 1.00x (Fastest)

[tatomyr]

LGTM.
I wonder if the original issue is still relevant though. I think that anyone who wants to use query can simply switch to OAS 3.2 as it's backward compatible with previous 3.x versions.