fix: Updating select to pass in a better prop; updating test to do a better check (#6385)

fixes #6372

test/e2e-cypress/tests/bugs/6351.js

@@ -3,11 +3,9 @@
 describe("#6351: Server dropdown should change when switched via oas3Actions.setSelectedServer", () => {
   it("should show different selected server", () => {
     cy.visit("/?url=/documents/bugs/6351.yaml")
-      .get("select")
-      .contains("http://testserver1.com")
+      .get("select").should("have.value", "http://testserver1.com")
       .window()
       .then(win => win.ui.oas3Actions.setSelectedServer("http://testserver2.com"))
-      .get("select")
-      .contains("http://testserver2.com")
+      .get("select").should("have.value", "http://testserver2.com")
   })
 })