Unskip "email" part of the reproduction for #16226 (#17623)

frontend/test/metabase/scenarios/admin/settings/email.cy.spec.js

@@ -82,7 +82,9 @@ describe("scenarios > admin > settings > email settings", () => {
     cy.button("Save changes").should("be.disabled");
   });
 
-  it.skip("should not reset previously populated fields when validation fails for just one of them (metabase#16226)", () => {
+  it("should not reset previously populated fields when validation fails for just one of them (metabase#16226)", () => {
+    cy.intercept("PUT", "/api/email").as("updateSettings");
+
     cy.visit("/admin/settings/email");
 
     // First we fill out wrong settings
@@ -104,7 +106,9 @@ describe("scenarios > admin > settings > email settings", () => {
 
     // Trying to save will trigger the error (as it should)
     cy.button("Save changes").click();
-    cy.findByText("Sorry, something went wrong. Please try again.");
+
+    cy.wait("@updateSettings");
+    cy.contains("Wrong host or port");
 
     // But it shouldn't delete field values
     cy.findByDisplayValue("mailer@metabase.test");