Create E2E test to generate an MR summary

Everyone can contribute. Help move this issue forward while earning points, leveling up and collecting rewards.

• Close this issue

Test the Summarize Code Changes feature to ensure feature is working correctly from an end to end point of view. Test will need to be executed in a live environment to integrate with a AI provider.

Related feedback issue: #443236 (closed) Related AI gateway inteway integration issue #459868 (closed)

TODO: need to confirm whether the current form of the feature will be the GA feature

Note: to enable feature in GDK, group needs to be ultimate: