fix: add missing vi import and fix getByText exact match assertions

- analytics.test.ts: add vi to vitest import (was used at lines 24, 37, 66)
- BookingError.test.tsx: use regex matchers so phone/email assertions
  match partial text in combined <p> element

Co-Authored-By: Paperclip <noreply@paperclip.ing>

src/__tests__/BookingError.test.tsx

@@ -28,11 +28,11 @@ describe("BookingErrorPage", () => {
 
   it("displays business contact phone", () => {
     render(<BookingErrorPage />);
-    expect(screen.getByText(BUSINESS_CONTACT_INFO.phone)).toBeInTheDocument();
+    expect(screen.getByText(new RegExp(BUSINESS_CONTACT_INFO.phone.replace(/[()]/g, "\\$&")))).toBeInTheDocument();
   });
 
   it("displays business contact email", () => {
     render(<BookingErrorPage />);
-    expect(screen.getByText(BUSINESS_CONTACT_INFO.email)).toBeInTheDocument();
+    expect(screen.getByText(new RegExp(BUSINESS_CONTACT_INFO.email))).toBeInTheDocument();
   });
 });

src/__tests__/analytics.test.ts

@@ -1,4 +1,4 @@
-import { describe, it, expect } from "vitest";
+import { describe, it, expect, vi } from "vitest";
 import { ANALYTICS_EVENTS, fireAnalyticsEvent } from "../lib/analytics";
 
 describe("analytics", () => {