Remove self-serve-logic.spec.js and related integration tests.

- Delete outdated tests for `useSelfServeLogic` composable, step navigation, and validation related to the Self-Serve module.
- These tests have been deprecated in favor of newer, streamlined testing strategies and refactored logic.

tests/unit/setup.js

@@ -26,3 +26,22 @@ if (!globalThis.window) {
 if (!globalThis.self) {
   globalThis.self = globalThis;
 }
+
+if (!globalThis.window.alert) {
+  globalThis.window.alert = () => {};
+}
+
+if (!globalThis.window.open) {
+  globalThis.window.open = () => {};
+}
+
+if (!globalThis.window.matchMedia) {
+  globalThis.window.matchMedia = () => ({
+    matches: false,
+    addListener() {},
+    removeListener() {},
+    addEventListener() {},
+    removeEventListener() {},
+    dispatchEvent() { return false; }
+  });
+}