Sync v2 branch with vnext changes

…-registry

Creates component registries in the `OpenApiWorkspace` for `$ref` resolution

Fixes cloning of `JsonNode` objects

…ance

Since we are no longer resolving JsonSchema refs when parsing a doc., some tests need to be updated

Fix default mappings for nullable types

…aluation

v2 refresh

Removes `JsonSchema` reference resolution when parsing a doc.

…ponents

… diagnostics

Co-authored-by: Andrew Omondi <[email protected]>

…-enum

Define JSON schema's Type property as a flaggable enum to allow storing multiple values