Fix x-ray dashboards crash on first open (#18045)

frontend/src/metabase/meta/Dashboard.js

@@ -250,7 +250,7 @@ export function setParameterDefaultValue(
 
 export function hasMapping(parameter, dashboard) {
   return dashboard.ordered_cards.some(ordered_card => {
-    return ordered_card.parameter_mappings.some(parameter_mapping => {
+    return ordered_card?.parameter_mappings?.some(parameter_mapping => {
       return parameter_mapping.parameter_id === parameter.id;
     });
   });

frontend/test/metabase/meta/Dashboard.unit.spec.js

@@ -210,6 +210,13 @@ describe("meta/Dashboard", () => {
       expect(hasMapping(parameter, dashboard)).toBe(false);
     });
 
+    it("should return false when missing parameter mappings", () => {
+      const dashboard = {
+        ordered_cards: [{ parameter_mappings: undefined }],
+      };
+      expect(hasMapping(parameter, dashboard)).toBe(false);
+    });
+
     it("should return false when there are no matching parameter mapping parameter_ids", () => {
       const dashboard = {
         ordered_cards: [

frontend/test/metabase/scenarios/dashboard/x-rays.cy.spec.js

@@ -136,7 +136,7 @@ describe("scenarios > x-rays", () => {
     });
   });
 
-  it.skip("should be able to save an x-ray as a dashboard and visit it immediately (metabase#18028)", () => {
+  it("should be able to save an x-ray as a dashboard and visit it immediately (metabase#18028)", () => {
     cy.visit("/");
     cy.contains("A look at your Orders table").click();