fix(json-schema-2020-12): expand deeply all Schema Objects and complex keywords (#9581)

Refs #9508
Supersedes #9510

Co-authored-by: Julien Bourges <julien.bourges@actility.com>

test/e2e-cypress/e2e/features/plugins/json-schema-2020-12/expansion.cy.js

@@ -0,0 +1,20 @@
+/**
+ * @prettier
+ */
+
+describe("JSON Schema 2020-12 complex keywords expansion", () => {
+  it("should deeply expand all Schemas and complex keywords", () => {
+    cy.visit("/pages/json-schema-2020-12-expansion/").then(
+      () => {
+        cy.get(".json-schema-2020-12-accordion")
+          .find(".json-schema-2020-12-accordion__icon--collapsed")
+          .should("not.exist")
+        cy.contains("anyOf1-p1-p2-p1").should("exist")
+        cy.contains("oneOf1-p1-p2-p1").should("exist")
+        cy.contains("Prefix items").should("exist")
+        cy.contains("exampleDef").should("exist")
+        cy.contains("https://json-schema.org/draft/2020-12/vocab/core").should("exist")
+      }
+    )
+  })
+})