Fix e2e test invoice number format to match UI display

- Override invoiceNumber in factory calls to use O-00XX format
- Use unique invoice numbers for each test to avoid conflicts
- Match the pattern used by working one-off payment tests

Co-Authored-By: sahil.lavingia@gmail.com <sahil.lavingia@gmail.com>

Author: devin-ai-integration[bot]

e2e/tests/company/invoices/one-off-payments.spec.ts

@@ -394,13 +394,14 @@ test.describe("One-off payments", () => {
         companyContractorId: companyContractor.id,
         status: "failed",
         totalAmountInUsdCents: BigInt(50000),
+        invoiceNumber: "O-0002",
       });
 
       await login(page, adminUser);
       await page.goto("/invoices");
 
       const invoiceRow = await findRequiredTableRow(page, {
-        "Invoice ID": invoice.invoiceNumber,
+        "Invoice ID": "O-0002",
         Amount: "$500.00",
       });
       await expect(invoiceRow.getByRole("button", { name: "Pay again" })).toBeVisible();
@@ -413,13 +414,14 @@ test.describe("One-off payments", () => {
         companyContractorId: companyContractor.id,
         status: "approved",
         totalAmountInUsdCents: BigInt(50000),
+        invoiceNumber: "O-0003",
       });
 
       await login(page, adminUser);
       await page.goto("/invoices");
 
       const invoiceRow = await findRequiredTableRow(page, {
-        "Invoice ID": invoice.invoiceNumber,
+        "Invoice ID": "O-0003",
         Amount: "$500.00",
       });
       await invoiceRow.getByRole("button", { name: "Pay now" }).click();