[Devin] Add test for catalog list view sorting functionality (DOT-TC-1290)

[devin-ai-integration]

Summary

Implements automated test for DOT-TC-1290: "Verify the Sorting functionality of catalog list view is working properly"

Changes:

• Added areFirstThreeItemCodesSortedDescending() method to CustomersPage.java and Customer.java to verify descending sort order (mirrors the existing ascending method)
• Created new test class VerifyTheSortingFunctionalityOfCatalogListViewTest.java that:
  1. Logs into distributor portal
  2. Navigates to customer order guide → catalog → list view
  3. Clicks Item Code header and verifies ascending sort
  4. Clicks Item Code header again and verifies descending sort

Review & Testing Checklist for Human

• Verify the test compiles - Local compilation failed due to Java 22 requirement; CI should verify this
• Verify customer ID 16579 exists and has catalog items with numeric item codes for sorting verification
• Run the test manually to confirm the sorting toggle behavior works as expected (ascending on first click, descending on second click)
• Review the descending sort logic - The method assumes item codes are numeric integers (same as existing ascending method)

Recommended Test Plan

1. Run the test against the UAT environment
2. Verify the test passes and correctly identifies both ascending and descending sort states
3. Optionally verify with a customer that has more than 3 catalog items to ensure sorting works beyond the first 3 items

Notes

• Test follows the same pattern as existing catalog sorting tests (e.g., VerifyTheOnSaleSortItemsByItemCodeInCatalogTest)
• The sorting verification checks only the first 3 items, consistent with existing areFirstThreeItemCodesSortedAscending() method

Link to Devin run: https://app.devin.ai/sessions/7b9c70ca6e4d4f168a104410fe44203f
Requested by: @sandaru-cd

[devin-ai-integration]

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