fix(sample-gen): parameter array missing items fallback (#7376)

* fixes #7375

test/e2e-cypress/tests/features/parameter-array-missing-items.js

@@ -0,0 +1,10 @@
+describe("Parameter - Invalid definition with missing array 'items' (#7375)", () => {
+  it("should render gracefully with fallback to default value", () => {
+    cy.visit("/?url=/documents/features/parameter-array-missing-items.yaml")
+      .get("#operations-default-get_example1")
+      .click()
+      .get("tbody > tr > .parameters-col_description textarea")
+      .should("exist")
+      .should("contains.text", "{}")
+  })
+})