fix: set yaml parser load option to JSON_SCHEMA (#8023)

test/e2e-cypress/static/documents/features/spec-parse-to-json.yaml

@@ -0,0 +1,26 @@
+openapi: 3.0.0
+
+info:
+  version: 1.0.0
+  title: Native date formats in YAML
+
+paths:
+  /foo:
+    get: 
+      description: Has date without quotes
+      responses:
+        '200':
+          description: Ok
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  without-quotes:
+                    type: string
+                    format: date
+                    example: 1999-11-31
+                  with-quotes:
+                    type: string
+                    format: date
+                    example: "1999-12-31"

test/e2e-cypress/tests/features/spec-parse-to-json.js

@@ -0,0 +1,23 @@
+/**
+ * @prettier
+ */
+
+describe("Parse YAML as YAML@1.2 with json_schema for all JSON-supported types", () => {
+  it("should have date string even without quotes", () => {
+    cy.visit("/?url=/documents/features/spec-parse-to-json.yaml")
+      .get("#operations-default-get_foo")
+      .click()
+      // Responses -> example value tab
+      .get(".language-json > :nth-child(3)")
+      .should("have.text", "\"without-quotes\"")
+      .get(".language-json > :nth-child(5)")
+      .should("have.text", "\"1999-11-31\"")
+      // Responses -> schema tab
+      .get(".model-example > .tab > :nth-child(2)")
+      .click()
+      .get(":nth-child(1) > :nth-child(2) > .model > :nth-child(1) > .prop > .property") // first element, without-quotes
+      .should("have.text", "example: 1999-11-31")
+      .get(":nth-child(2) > :nth-child(2) > .model > :nth-child(1) > .prop > .property") // second element, with quotes
+      .should("have.text", "example: 1999-12-31")
+  })
+})