feat: Update HTTPRoutePolicy handling for Ingress

[dspo]

Refactor the HTTPRoutePolicy update function to handle Ingress objects and improve logging. Add functionality to process HTTPRoutePolicies for Ingress in the IngressReconciler. Update tests to include scenarios for HTTPRoutePolicy targeting Ingress.

Type of change:

• Bugfix
• New feature provided
• Improve performance
• Backport patches
• Documentation
• Refactor
• Chore
• CI/CD or Tests

What this PR does / why we need it:

Pre-submission checklist:

• Did you explain what problem does this PR solve? Or what new features have been added?
• Have you added corresponding test cases?
• Have you modified the corresponding document?
• Is this PR backward compatible? If it is not backward compatible, please discuss on the mailing list first

[Copilot]

Pull Request Overview

This PR refactors HTTPRoutePolicy handling for Ingress by updating the update function, adding corresponding tests, and enhancing logging.

• Refactored resource translation and policy processing for Ingress.
• Added E2E tests for HTTPRoutePolicy targeting Ingress.
• Updated indexers and controller event handling to support the new Ingress policy workflow.

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
test/e2e/ingress/ingress.go	Added comprehensive E2E tests for HTTPRoutePolicy handling on Ingress.
internal/provider/adc/translator/ingress.go	Updated Ingress translation to integrate HTTPRoutePolicy processing.
internal/provider/adc/translator/httproute.go	Refactored HTTPRoutePolicy functions to separate Ingress and HTTPRoute paths.
internal/controller/ingress_controller.go	Introduced generic event handling and Ingress-specific HTTPRoutePolicy logic.
internal/controller/indexer/indexer.go	Added a new index for HTTPRoutePolicy targetRefs on Ingress.
internal/controller/httproutepolicy.go	Added policy processing for Ingress and refactored conflict handling.
internal/controller/httproute_controller.go	Updated event predicates and object key fetching in HTTPRoute reconciliation.